The heating coils rating at 220 volt and producing 50 cal / sec heat are available with the resistances `55 Omega, 110 Omega, 220 Omega` and `440 Omega` . The heater of maximum power will be of

The resistance of a heater coil is 110Omega . A resistance R is connected in parallel with it and combination is joined in series with a resistance of 11Omega to a 220V main line. The heater operates with a power of 110W the value of R in Omega is

Two bulbs are marked 100 W, 220 V and 60 W, 110 V. Calculate the ratio of their resistances.

Two bulbs are marked 100 W, 220 V and 60 W, 110 V. Calculate the ratio of their resistances.

The resistance of a heater coil is 110 Omega . A resistance R is connected in parallel with it and the combination is joined in series with a resistance of 11 Omega to a 220 V main line. The heater operates with a power of 110 W . The value of R in Omega is

How much current will an electric heater coil draw from 220 V source, if the resistance of heater coil is 110 Omega .

Two bulbs are rated 60 W, 220 V' and '60 W, 110 V respectively. Calculate the ratio of their resistances.

Two bulbs are having the ratings as 60 W, 220 V and 40 W, 220 V respectively. Which one has a greater resistance?

Two bulbs have ratings 100 W, 220 V and 60 W, 220 V respectively. Which one has a greater resistance?