Measurement and Instrumentation
When using ohmmeter, applied voltage is to be disconnected from the circuit because

The ohmmeter has its own internal battery
Voltage source will increase resistance
Current will decrease resistance
None of these

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP