- Home
- Question Answer
- A battery of e.m.f. 3.0 V supplies current through a circuit in which resistance can be changed. A high resistance voltmeter is connected across the b
. A battery of e.m.f. 3.0 V supplies current through a circuit in which resistance can be changed. A high resistance voltmeter is connected across the b
Best Answer
ε = 3 volt
I = 1.5 A
V = 2.7 V
V = ε – Ir
r = (e – V) / I
r = (3 – 2.7) / 1.5
r = 0.2 ohm
Related questions