An electric heater of resistance 6.5Ω is connected in series with a choke of inductance value 0.1H. If the mains frequency is 50Hz, find the voltage to be applied to the arrangement in order to maintain 110V across the heater. If the frequency was increased by 5 per cent, keeping the applied voltage constant, find the voltage across the heater.

An electric heater of resistance 6.5Ω is connected in series with a choke of inductance value 0.1H. If the mains frequency is 50Hz, find the voltage to be applied to the arrangement in order to maintain 110V across the heater. If the frequency was increased by 5 per cent, keeping the applied voltage constant, find the voltage across the heater.