Question

Consider the circuit shown. Galvanometer resistance is 10 Ω and current through galvanometer is 3 mA. Find the resistance of shunt.

Options :

  1. 10–3 Ω

  2. 7.5 × 10–3 Ω

  3. 6.75 × 10–3 Ω

  4. 3.75 × 10–3 Ω

Show Answer

Answer :

3.75 × 10–3 Ω

Solution :

Since G and S are in parallel

VG = VS

3 mA × 10 = 8 A × RS

RS = 3.75 m Ω

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