A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A pass through the coil. When it is converted to a 10 A ammeter, the shunt resistance is

Question

A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A pass through the coil. When it is converted to a 10 A ammeter, the shunt resistance is (A)  0.01 Ω  (B)  0.05 Ω  (C)  2000 Ω  (D)  5000 Ω

Tardigrade Admin · Accepted Answer

Resistance of galvanometer G=50 Ω Ig=0.01 A, I=10 A Shunt resistance, S=(Ig G/I-Ig) =(0.01×50/10-0.01)=0.05 Ω

Q. A $50 o hm$ galvanometer gets full scale deflection when a current of $0.01 A$ pass through the coil. When it is converted to a $10 A$ ammeter, the shunt resistance is

$0.01 Ω$

$0.05 Ω$

$2000 Ω$

$5000 Ω$

Resistance of galvanometer $G = 50 Ω$
$I_{g} = 0.01 A, I = 10 A$
Shunt resistance, $S = \frac{I _{g} G}{I - I _{g}}$
$= \frac{0.01 \times 50}{10 - 0.01} = 0.05 Ω$

Q. A 50ohm galvanometer gets full scale deflection when a current of 0.01A pass through the coil. When it is converted to a 10A ammeter, the shunt resistance is

0.01Ω

0.05Ω

2000Ω

5000Ω