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An ammeter gives full scale deflection when a current of 2A flows through it. The resistance of ammeter is 12 . If the same ammeter is to be used for measuring a maximum current of 5A, then ammeter must be connected with a resistance of

a)

18 in parallel

b)

8 in parallel

c)

18

d)

8



Question ID - 152038 | SaraNextGen Top Answer

An ammeter gives full scale deflection when a current of 2A flows through it. The resistance of ammeter is 12 . If the same ammeter is to be used for measuring a maximum current of 5A, then ammeter must be connected with a resistance of

a)

18 in parallel

b)

8 in parallel

c)

18

d)

8

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

From the formula shunt resistance

127 votes


127