Samacheer Kalvi Science Physics Class 10 Electricity Questions - 1
Question: 1
Kilowatt hour is the unit of
(A) Electrical power
(B) Electrical energy
(C) Conductivity
(D) Resistivity
Ans: B
Electrical energy
Question: 2
Which of the following is correct?
(A) Rate of change of charge is current
(B) Rate of change of energy is current
(C) Rate of change of current is charge
(D) Rate of change of charge is electrical power
Ans: A
Rate of change of charge is current
Question: 4
In a simply circuit, why does the bulb glow when you close the switch?
(A) Closing the switch completes the circuit
(B) Closing the switch breaks the current
(C) The switch produces electricity
(D) The bulb is getting charged
Ans: A
Closing the switch completes the circuit
Question: 6
The power of an electric device is a product of ____ and _____
Answer:
voltage, current
Question: 8
The ratio of the potential difference to the current is known as _____
Answer:
resistance
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