Class 12PhysicsMoving Charges and MagnetismThe Moving Coil Galvanometer (Sensitivity) and Ammeter and Voltmeter Conversion
Difficult$A$ galvanometer with its coil resistance $25\,\Omega$ requires a current of $1\,mA$ for its full-scale deflection. In order to construct an ammeter to read up to a current of $2\,A$,the approximate value of the shunt resistance should be:
- A$2.5 \times 10^{-2}\,\Omega$
- B$1.25 \times 10^{-3}\,\Omega$
- C$2.5 \times 10^{-3}\,\Omega$
- D$1.25 \times 10^{-2}\,\Omega$
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