CAPE Physics Unit 2 · 2008 (Rest of Region) · Paper 1 · Question Q4
A battery of e.m.f. 1.5\text{ V} has a terminal potential difference of 1.25\text{ V} when a resistor of 25\ \Omega is joined to it. The internal resistance of the battery is
- (A)
4.2\ \Omega - (B)
5.0\ \Omega - (C)
6.3\ \Omega - (D)
25\ \Omega
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