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Current electricity in physics

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Question 1. The main power supply in India is at 220 V, whereas that in the US is at 110V. Which one among the following statements in this regard is correct?






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Question 2. The resistance of a wire is 10Ω if it is stretched ten times, the resistance will read






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Question 3. In India, distribution of electricity for domestic purpose is done in the form of







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Question 4. When an electrical safety fuse is rated (marked)as 16A, it means it






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Question 5. Ohm’s law defines






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Question 6. A current I flows through a potential difference V in an electrical circuit containing a resistance R. The product of V and I, i.e. VI may be understood as






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Question 7. A current of 0.5 A is drawn by a filament of an electric bulb for 20min. the amount of electric charge that flows through the circuit is







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Question 8. Ohm’s law can also be taken as a statement for





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Question 9. An electric heater is rated 150W, electric power costs Rs 2 per kWh, then the cost of power for 10h running the heater is






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Question 10. During short circuiting, the current flowing in the electrical circuit






 

 
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