Question

Two electric bulbs have resistances in the ratio 1:2. If they are joined in series, the energy consumed in them are in the ratio _________.
1. 1:2
2. 2:1
3. 4:1
4. 1:1

Answer 1

in series current remains the same, and \[P = I^{2}R\] So, power is directly proportional to R i.e. the resistance. So the energy consumed is in the ratio 1:2.