Kilowatt-hour(kWh) is a unit of?
Correct answer: B. Energy
- A. Power
- B. Energy
- C. Current
- D. Resistance
Explanation
Option B is correct as energy=power×time. SI unit of power is the watt (W) thus the kWh is a unit for "energy".
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
Practise Current Electricity
1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Current Electricity questions
International ohm is defined in terms of the resistance of _.
Req = R1 + R2 + R3 + ..... + Rn is the combination in _.
If a cell of emf 2V and internal resistance 0.5 ohm is connected across a resistance R, the current that flows is the same as that when a cell of emf 1.5 V and internal resistance 0.3 ohms is connected across the same resistor. Then R= Ohm.
The resistance of a human body is about?
The condition for the validity under Ohm's law is that?
The resistance of a conductor at absolute zero (0K) is: