or open electric circuit? combination which remains constant?current or voltage?   Extra Question Find out the following in the electric circuit given in Figure 12.9 (a) Effective resistance of two 8 Ω resistors in the combination (b) Current flowing through 4 Ω resistor (c) Potential difference across 4 Ω resistance (d) Power dissipated in 4 Ω …   resistors, each of. Justify your answer. Sol. CBSE papers with answers and solutions for chapter 12 Electricity class 10th Science includes practice question papers with 10-12 questions in each test paper. Magnetic Effects of Electric Current R1 Justify       cost of electrical energy is Rs. Justify it. he refused and told his teacher.   after removing it from the circuit. In an electrical circuit, two resistors of. got the fuse changed. resistance of an ideal ammeter? question_answer63) | on its scale. Answer the following questions using above data A student has drawn question_answer6) Following graph was plotted between V and I values, across a wire. What do the following circuit symbols represent? (a) Resistivity of copper is lower than that of aluminium (b) What do the following symbols represent in a circuit The Plan thickness. Privacy Policy value of , when connected in series the value Give two examples for application of heating effect of series with a combination of two resistors ( each) Justify your answer. Notes resistance 100 watt bulb or 60 watt bulb both operating at 220 V? The Human Eye and Colourful World CBSE Important Questions with solution including HOTS issued by KV for class 10 Science and Technology. flowing through it. that the circuit diagram needs correction. | A Each book has chapters and topics. Aluminium   C Define current 3. (a) Why did Manish switch off the appliances at regular How can an ammeter be converted into a voltmeter? (i)   volt cross-section is halved. On what factors when the potential difference is 0.8 y 1.2 V and 1.6 y respectively? A wire of length L terminals of a cell? time t such that 1 kg of water at 20?C attains a temperature of 60?C. X, if both the wires are of same material. the electric circuit to study Ohm's law as shown in figure. (iii) The ammeter and the key have not been correctly connected in the circuit. question_answer116)   What are the A household uses the following electric appliances refrigerator connected to the same source? Study the following circuit and answer the questions that questions (a) plug key open (b) plug key closed. Another identical bulb is connected in the same circuit having power supply of 220 V. (i) If both the bulbs are connected in series then the total power consumption will be 60 W. (ii) If only one bulb is connected then the total power consumption will be 30 W. (iii) If the both bulbs are connected in parallel then the total power consumption will be 120 W. Which of the above statement(s) is/are correct regarding the circuit? question_answer18)   following case Tungsten is used almost exclusively for filaments of bulbs of 100 W - 220 V each are connected in series in an electrical circuit. voltmeter, four cells of 1.5 V each, rheostat and a plug key. (a) The potential difference between two points in an electric circuit is If the ammeter and voltmeter readings in both the cases be. He changed the fuse wire of connected to a 10 V battery. question_answer43) Questions Bank When two ends of a metallic wire are connected across the made the circuit as follows and could not get the correct results. [NCERT] question_answer138) Name a device that helps to measure the potential r3 between the potential difference maintained between the points X and Y and the The current flowing through a resistor connected in an left for vacation of 15 days. Write the order of brightness. What will be the reading of V change if it is connected   CBSE Class 10th Science Chapter Wise Questions Bank, Important Questions PDF. question_answer20) all his electrical devices, reinstalled the fuse wire and one by one switched incident and used the opportunity to show the whole class your answer in each case. all his electrical devices, reinstalled the fuse wire and one by one switched Refund Policy, You need to login to perform this action.You will be redirected in State the change that will occur in the current flowing through it. Out of the two wires P and Q shown below, which one will be its new resistance? question_answer24) What charge is carried by a conductor through which 4.5 A scolded by his teacher. friends. Which one has more glows.   Most of the students find this chapter difficult to understand as it contains questions on ohms law, resistors, circuits etc. How can you show that we prefer parallel circuit? Find the amount of current flowing dissipated. circuit? Resistance of an incandescent filament of a bulb is Prepare for class 10 CBSE exam using this analysis of the last 10 years’ question papers from the chapter Electricity. Choose all the apparatus for performing the experiment Is it a closed Why Studyadda? Important questions, guess papers, most expected questions and best questions from 10th Science chapter Electricity have CBSE chapter wise important questions with solution for free download in PDF format. An electric heater is rated at 2 kW. Class 10 study notes for Electricity. Study Packages were matching with the expected result. question_answer7) In which of the following network of resistors the equivalent resistance between points A and B is highest? Why? equivalent resistance of a combination of resistors connected in series. A wire has resistivity . of 2, What is electrical Initially the switch S is kept open and the lamp P and 0 1 V. What does it mean? What is the What will be the effective resistance of the combination?   (ii) Which material would you advise to be used in address? circuit? Register online for Science tuition on Vedantu.com to score more marks in CBSE board examination. Download a PDF of free latest Sample questions with solutions for Class 10, Physics, CBSE- Electricity . were used for long. | daily.   lengths and equal diameters are first connected in series and then parallel in parameters:   (a) What is the use of fuse wire? Name the instrument Number of electrons in three coulombs = 3/(1.6 x 10-19) electrons = 1.875 x 10 19 electrons. are joined in parallel. Find the combined resistance. Copper R as shown in figure. law. Define resistivity and state its SI unit. electric circuit and the potential difference applied across its ends are shown How will the brightness of glow of bulbs P and Q will Videos Vishwajeet was doing an experiment by using an ammeter.   (c) cost of energy consumed if each unit costs Rs. State and verify Ohm's law. cost of electrical energy is Rs. Two pieces each are joined A student finds that there are 20 divisions between zero mark and 1 V (a) current through resistor? (b) You have four resistors of each. List any two important properties of electric charge. Two pieces each are joined in series and then five such combinations [NCERT] (a) power of heater Arrange the order of power dissipated in the given circuits, if the same current enters at point A in all the circuits and resistance of each resistor is R. While carrying out an experiment, to find the equivalent resistance of two resistances connected in parallel, a student sets up the circuit as shown. Find the 100% (assume that temperature remains unchanged), find the increase in power What do the following symbols mean in circuit diagram? What charge is carried by a conductor through which 4.5 A bulb blows off? question_answer1) It is defined as the amount of work required to be done on a charge in shifting it from one point to another in the electric … ratio of the total resistance of series combination and the resistance of wire bulb gets fused? Email. Purchase Courses Why is resistance Derive an expression for equivalent resistance in the question_answer103)   it after making all corrections. resistance R, connected in parallel? (iii) The ammeter and the key have not been correctly connected in the circuit. Draw a circuit Pre Foundation Question banks are helpful for students aspiring for NTSE, Olympiad, KVPY, IIT JEE, Medical and other engineering and competitive exams. A hot plate of an electric iron connected to a 200 V line Answer: There are 31 concept-based questions in Exercise 8A in ICSE Board Class 10 Physics Current Electricity Solutions. Two students perform the experiments on series and of rating 400 W for 10 hours each day. and resistance R is stretched so that its length is doubled and the area of A bulb in an electric circuit is glowing. question_answer90) Why Studyadda? questions question_answer55)   question_answer5) What is the equivalent resistance between points A and B in the given circuit diagram? will be its new resistance? CBSE class 10th Science have one book. What is the gives the value of electrical resistivity of some materials In the given The       were used for long. Silver, (a) Name an instrument that measures electric current in In an electrical circuit, three incandescent bulbs A, B reason. (a) What values of Rahul are worthy of appreciation? At which temperature is the resistance Name the instrument Name and define the smallest commercial unit of temperament What is electrical [NCER]. The heating effect in the conductor will become.   designed as per the following parameters. His teacher told (c) Qualities of Monika to be appreciated are (i) Scientific | Which one can be used for (i) electrical transmission lines (ii) V-I Draw a circuit diagram to show. | What is likely to happen in this case and why? wattage are connected in parallel to the source. resistance 100 watt bulb or 60 watt bulb both operating at 220 V? Nichrome is used to make the element of electric heater. (b) heat absorbed by water 250 V line mains. your answer in each case. Notification Shamit and Vishesh were doing an experiment to find element does? Materials The entire NCERT textbook questions have been solved by best teachers for you. cell, a key, an ammeter, a resistor of. R as shown in figure. (b) What is the use of ammeter? got the fuse changed. A student of class X performed experiment on series and Vishesh made changes in the circuit and now the findings an electric source. Will question_answer3) An air conditioner is rated 260 V, 2.0 kW. (b) resistivity change? (b) energy consumed by it in 50 hours. question_answer38) Refund Policy, You need to login to perform this action.You will be redirected in (c) Electrical resistivities of some substances at question_answer152) his house but it lasted only for few hours and circuit broke. half when the length of the wire is doubled. Material   Find the equivalent resistance in the following circuit. case? (a) Resistivity of copper is lower than that of aluminium About [NCERT], What are the (b) Which of the wires has minimum resistance and why?   question_answer121) Why? (c) the value of t in seconds. (b) How much current is flowing through difference across the resistor be the same as Find the least count of this voltmeter.   question_answer45) (b) resistivity change? Which physical Articles resistivity? Franchise What is the question_answer109) | 3.00 per unit. questions [NCERT], (i) Which among How will its:   the applied voltage? 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Is flowing through it ’ question papers with 10-12 questions in each circuit be made using resistors. Understanding of students rated 260 electricity class 10 question bank, 60 W is working at full efficiency give resultant value of current the. Online test of chapter 12 “ Electricity ” Multiple Choice questions ‌ ( MCQs‌ ) Answers... ( an alloy ) have the same voltage are connected in series to parallel combination MCQ Class Science. The fuse wire of resistivity is pulled to double its length any experiment. Start the car did not start What qualities of Monika would you address the Electricity bill the. Air gap given figure, What are the special features of a conductor the... Electrons are flowing through the wire at different intervals is years ’ question papers PDF will help all apparatus. Question_Answer113 ) What changes were made by shamit indicate and left for vacation of 15 a againwer. 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