1. Home
  2. Question Answer
  3. 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

Talk to Our counsellor