Q17 of 126 Page 196

Can the potential difference across a battery be greater than its emf?

No, the potential difference across a battery cannot be greater than the emf as the emf is the maximum potential difference across the terminals of the battery. The potential across the battery, however, drops when connected to a circuit due to the drop across the internal resistance of the battery.


More from this chapter

All 126 →
15

Would you prefer a voltmeter or a potentiometer to measure the emf of a battery?

 16

Does a conductor become charged when a current is passed through it?

 1

A metallic resistor is connected across a battery. If the number of collisions of the free electrons with the lattice is somehow decreased in the resistor (for example, by cooling it), the current will

 2

Two resistors A and B have resistances RA and RB respectively with RA < RB. The resistivities of their materials are ρA and ρB.