i. Two identical resistors each of resistance 10Ω are connected in

A. Series


B. Parallel to a 6 V battery


Calculate the ratio of power consumed in the combination of resistors in two cases.


ii. Draw the circuit diagram of the two cases.


Ans. i. 4 : 1

(i) A. If the resistors are connected in series then equivalent resistance is


R = R1 + R2


= 10 + 10


= 20 Ω


Power consumed (P1) =


=


= 1.8 Watt


B. If the resistors are connected in series then equivalent resistance is


R =


=


= 5Ω


Power consumed (P2) =


Ratio =


(ii)


A.




21