engineering recuitment TANGEDCO Field Assistant (Trainee) Mock Test Electrician and Wireman Measuring Instruments
To use voltmeter as ammeter shunt resistance:
1
\({R_{sh}} = \frac{{{R_m}}}{{\frac{I}{{{I_m}}} - 1}}\)
2
\({R_{sh}} = {R_m}\left( {\frac{I}{{{I_m}}} - 1} \right)\)
3
\({R_{sh}} = \left( {\frac{I}{{{I_m}}} - 1} \right)/{R_m}\)
4
None of these