Question

Two resistors each of resistance 10Ω and 30Ω are connected with a 12V battery. Calculate net resistance along with a diagram in each case

i in series

ii in parallel

iii calculate the ratio of power consumed in each case

Answer 1

Answer:

1. series = 10+30 = 40ohm
2. parallel = 1/R = 1/10 + 1/30 . R = 7.5ohm
3. power series = V2/r = 144/40 = 3.6

power parallel = 144/7.5 = 19.2

power ratio = 3.6/19.2 = 0.1875