Question 336: Current Electricity

Question

This questions has Statement - $${\rm I}$$ and Statement - $${\rm I}$$$${\rm I}$$. Of the four choices given after the Statements, choose the one that best describes into two Statements.
Statement - $${\rm I}$$ :  Higher the range, greater is the resistance of ammeter. 
Statement - $${\rm I}$$$${\rm I}$$ : To increase the range of ammeter, additional shunt needs to be used across it.

Accepted Answer

Statements $${\rm I}$$ is false and Statement $${\rm I}$$$${\rm I}$$ is true
For ammeter, shunt resistance,  $$S = {{{{\rm I}_g}G} \over {{\rm I} - {{\rm I}_g}}}$$
Therefore for $${\rm I}$$ to increase, $$S$$ should decrease, So additional $$S$$ can be connected across it.

Answer

Statement - $${\rm I}$$ is true, Statement - $${\rm II}$$ is true, Statement - $${\rm II}$$ is the correct explanation of statement - $${\rm I}$$.

Answer

Statement - $${\rm I}$$ is true, Statement - $${\rm II}$$ is true, Statement - $${\rm II}$$ is not the correct explanation of statement - $${\rm I}$$.

Answer

Statement - $${\rm I}$$ is true, Statement - $${\rm II}$$ is false

Answer

Statement - $${\rm I}$$ is false, Statement - $${\rm II}$$ is true

Current Electricity

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