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QJEEM13Ph92e8: JEE Main 2013 Physics - Class 12 JEEM13Ph92e8 Solution: This questions has Statement - and Statement - . Of the four…

This questions has Statement - I{\rm I} and Statement - I{\rm I} I{\rm I} . Of the four choices given after the Statements, choose the one that best describes into two Statements.

Statement - I{\rm I} : Higher the range, greater is the resistance of ammeter.
Statement - I{\rm I} I{\rm I} : To increase the range of ammeter, additional shunt needs to be used across it.

Multiple Choice Options

  • A Statement - I{\rm I} is true, Statement - II{\rm II} is true, Statement - II{\rm II} is the correct explanation of statement - I{\rm I} .
  • B Statement - I{\rm I} is true, Statement - II{\rm II} is true, Statement - II{\rm II} is not the correct explanation of statement - I{\rm I} .
  • C Statement - I{\rm I} is true, Statement - II{\rm II} is false
  • D Statement - I{\rm I} is false, Statement - II{\rm II} is true

Step-by-Step Verified Solution

Statements I{\rm I} is false and Statement I{\rm I} I{\rm I} is true

For ammeter, shunt resistance, S=IgGI−IgS = {{{{\rm I}_g}G} \over {{\rm I} - {{\rm I}_g}}}

Therefore for I{\rm I} to increase, SS should decrease, So additional SS can be connected across it.

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