Power MCQ (Multiple Choice Questions) PDF Download

If i is current through the circuit and E is EMF of battery then power P at which chemical energy of battery is dissipated is

1. P=iE
2. P=i²E
3. P=i²E²
4. P=iE²

If i is current through the circuit and r is resistance then power P at which power dissipated as thermal energy of the battery is

1. P=ir
2. P=i²r
3. P=i²r²
4. P=ir²

Power is a

1. vector quantity
2. scalar quantity
3. unit vector
4. infinite quantity

Rate at which force does work on object is termed as

1. power due to force
2. acceleration due to force
3. velocity due to force
4. distance due to force

When real battery of EMF E and internal resistance r does work on the charge carrier in a current i through the battery, rate P of energy transfer to the charge carrier, if V is potential, is

1. P=iV
2. P=V/i
3. P=i/V
4. P=i+V