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Solution


Q.

Assertion: In a circuit which is having three series resistors of R Ω each, the total resistance of the circuit will be 3R.
Reason: As in parallel circuit the resultant resistance will be 1R=1R1+1R2+1R3.
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.

(2)

Resultant resistance is the addition of individual resistance present in the series circuit. So, according to the above statement,

R=R1+R2+R3.

So, total resistance will be 3R. In parallel combination, resultant resistance will be 

1R=1R1+1R2+1R3.

Thus, both assertion and reason are correct, but reason is not the correct explanation of assertion.