Internal Resistance Flashcards
1
Q
Internal Resistance
A
Resistance due to opposition of flow of charge within a source of e.m.f
2
Q
Lost volts
A
The difference between the terminal voltage and the e.m.f. of a source of e.m.f due to energy being dissipated across the internal resistance of the power source
3
Q
Terminal potential difference
A
The potential difference measured across the battery/power supply when that battery/power supply is connected by a complete circuit to a load (external) resistance. If there is no internal resistance, the terminal p.d. will equal to the e.m.f
4
Q
Potentiometer
A
A potential divider circuit which consists of one length of wire and a sliding connection to alter the ratios resistances of the two sections of wire
