In the circuit shown the ideal ammeter A reads a current of I 1 A . Now the source of e.m.f. and the ammeter are physically interchanged, i.e. the source is put between B and C and the ammeter between

Question

In the circuit shown the ideal ammeter A reads a current of I 1 A . Now the source of e.m.f. and the ammeter are physically interchanged, i.e. the source is put between B and C and the ammeter between A and B . The ammeter now reads a current of I 2 A . Then -

TestHub · Accepted Answer

I 1 = R 2 R 2 + R 3 × E R 1 + R 2 R 3 R 2 + R 3 = E R 2 R 1 R 2 + R 2 R 3 + R 3 R 1 After interchanging ammeter and source of e.m.f., new current ⇒ I 2 = R 2 R 1 + R 2 E R 3 + R 1 R 2 R 1 + R 2 E R 2 R 1 R 2 + R 2 R 3 + R 3 R 1 = I 1

Physics - Current Electricity Question with Solution | TestHub

Options:

Doubts & Discussion