Electromotive Force
 

Electromotive Force problem 7


A student wishes to measure the electromotive force (e.m.f.) of a battery and the potential difference (p.d.) across a resistor. She has the resistor, the battery, and some connecting wires. What else does she need?


  • a voltmeter only


  • a voltmeter only


  • an ammeter and a voltmeter


  • a force meter (newton meter) and a voltmeter



 

main author and content editor: Olatunji Bello