Correct option is B
To find the current in the shunt, let us analyze the problem:
Voltage across the meter coil (V): 500 mV = 0.5 V.
Resistance of the meter coil (R): 1000Ω. Using Ohm’s Law, current in the meter coil (
Iₘ) is given by:
Im=V/R=0.5/1000=0.0005 A
1.
Total current through the circuit (I): Since the shunt is in parallel with the meter coil, the voltage across both is the same (0.5 V). The shunt current (
Iₛ) can be calculated using Ohm’s Law:
Is=V/Rs=0.5/0.02=25 A.
