This question has Statement I and Statement II . Of the four choices given after the Statements, choose…

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements.

Statement - I : Higher the range, greater is the resistance of ammeter.
Statement - II : To increase the range of ammeter, additional shunt needs to be used across it.
  1. Statement-I is true, Statement-II is false.
  2. Statement- I is false, Statement- II is true.
  3. Statement- I is true, Statement- II is true, Statement- II is the correct explanation of Statement- I .
  4. Statement- I is true, Statement- II is true, Statement- II is not the correct explanation of Statement- I .

Solution

For higher range resistance should be less,so statement I is false.

To increase the range by n-times additional shunt should be placed S=Gn-1 where 'G' resistance of galvanometer

Asked in: JEE Main 2013 (07 Apr)

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