Measurement and Instrumentation
If an inductance L is connected in one arm of bridge and resistance R1, R2, R3 in other three arms

 The bridge can be balanced.
 The bridge is balanced for some specified value of frequency.
 The bridge is balanced for some specified value of R1, R2, R3.
 The bridge can not be balanced.

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Measurement and Instrumentation
Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current.

 A is ture and R is false.
 Both A and R are true and R is not correct explanation of A.
 A is false and R is ture.
 Both A and R are true and R is correct explanation of A.

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