Q.

Assertion: An ammeter is always connected in parallel with the circuit for which current has to be measured.
Reason: As the current in a series circuit is same.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.  
3 Assertion is true, but reason is false.  
4 Assertion is false, but reason is true.  

Ans.

(4)

In a series circuit the current measured will be same, this is the reason why ammeter is always connected in series with the circuit for which the measurement has to be done. Thus, assertion is false, but reason is true.