Question

In the circuit shown in Fig. 4.67, the resistance of the ammeter A is negligible and that of thevoltmeter V is very high. When the switch S is open, the reading of voltmeter is 1.53 V. On closing the switch S, the reading of ammeter drops to 1.03 V. Calculate : (i) emf of the cell (ii) internal resistance of the cell (iii) value of R.

Answer 1

Correct Answer - `(i) 1.53 V (ii) 0.50 Omega (iii) 1.03 Omega`