An ammeter has a resistance of 50 ohms and a shunt of 0.01 Î©. The deflection is Î¸. If the shunt resistance is increased to 0.02 Î©, the deflection will be.

Electronics and Communication Engineering (ECE) : Measurements and Instrumentation - Quiz(MCQ)

Î¸

2Î¸

0.5Î¸

0.25Î¸

Correct Answer : Option (B) : 2Î¸

Explanation : Since shunt resistance is doubled, current through ammeter is doubled (current division for resistances in parallel). Therefore reading is 2 θ.

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