question_answer

    An ammeter gives full scale deflection when a current of 2A flows through it. The resistance of ammeter is \[1.6\times {{10}^{-19}}C\]. If the same ammeter is to be used for measusring a maximum current of 5A, then ammeter must be connected with a resistance of :

A)  \[\text{1}\text{.0}\times \text{1}{{\text{0}}^{\text{-4}}}\text{Wb}/{{\text{m}}^{\text{2}}}\] in parallel

B)  \[\text{2}.\text{1}\times \text{1}{{0}^{-\text{6}}}\text{ s}\]. in parallel

C)  \[\text{1}.0\text{5}\times \text{1}{{0}^{-\text{6}}}\text{ s}\]. is series

D)  \[7\times \text{1}{{0}^{-7}}\text{ s}\]. is series