Electric Curren...

 In the following question, Statement - 1 (Assertion) is followed by Statement - 2 (Reason). The question has the following four choices out of which only one choice is correct.
Statement - 1: A 60 W bulb is connected in parallel with a room heater and this combination is connected across the mains. If the 60 W bulb is replaced by a 100 W bulb, the heat produced by the heater will remain the same.
Statement - 2: When resistances are connected in parallel across the mains, the heat produced is inversely proportional to the resistance.

Two equal resistors, each of resistance R, connected in series across a voltage source V dissipate power P. What would be the power dissipated in the same resistors when they are connected in parallel across the same voltage source?

Two electrical devices of power ratings 1 kW and 2 kW are connected (a) in series and (b) in parallel. The ratio of the power ratings of the combination in case (a) to that in case (b) is