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.