H2P-291
Internal resistance
H2 Physics · JC 2 · Easy · Internal resistance
A charge of 40 C passes through a battery. In the internal resistance, 12 J of heat is produced, and in the external circuit, 28 J of heat is produced. Assuming all electrical energy is converted to heat, what is the e.m.f. of the battery?
- 1.0 V
- 0.70 V
- 2.0 V
- 0.25 V
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