4.2.3. Electromotive force and potential difference
A subsection of Physics, 0625, through 4. Electricity and magnetism
Listing 10 of 96 questions
Define potential difference (p.d.). State the equation which defines electromotive force (e.m.f.) E. The e.m.f. of a battery is 9.0 V. The battery is in a circuit. Calculate the work done by the battery when it moves a charge of 30 C around a complete circuit. work done = A circuit consists of a d.c. power supply, a lamp and a thermistor. Draw a circuit diagram of these components connected in series. Explain what happens in the circuit you have drawn in when the temperature of the thermistor is increased.
0625_m23_qp_42
THEORY
2023
Paper 4, Variant 2
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