Two heaters are marked 200 V, 300 W. 300 V, 600 W. If the heaters are combined in series and the combination connected to a 200 V.d.c. supply, which heater will produce more heat ? What is the power output of the combination ?

Two electric lamps marked 110V- 60W and 110V - 100W are connected in series and the combination is connected to 220 V mains what will be efferctive power of the lamps ? What will happen due to the above connection ?

Two resistances , each of magnitude 2Omega are connected in series and a potential difference of 2 V is applied at the two ends of the combination . What is the power of the combination?

Each of two electric lamps of power 500 W is designed to work in 220 V line . If the lamps are connnected in series and the combination is connected to 110 V line , what will be the power of each lamp ?

Two resistances , each of magnitude 2Omega are connected in parallel and a potential difference of 2 V is applied at the two ends of the combination . What is the power of the combination?

The coil of a heater connected to a 200 V line , con-sumes a power of 100 W . The coil is divided into two equal parts . The two parts are combined in parallel and connected to a 200 V line . What will be the power consumed by the new combination ?

A small heating element connected to 10 V dc supply draws a current of 5 A . Find the electric power supplied to the heater .

Two resistances 2Omega and 6Omega are connected in series and the combination is then connected to a source of emf 12 V . How much power is consumed in each resistance ?

Two cells one of emf 1.4 V and internal resistance 0.6 Omega the other of emf 2.5. V and internal resistance 0.3 Omega are connected in parallel and the combination is connected in series with an external resistance of 4 Omega . What is the current through this resistance?

Two resistances 2Omega and 6Omega are connected in parallel and the combination is then connected to a source of emf 12 V . How much power is consumed in each resistance ?