An electric lamp rated 250V, 50W. Calculate the resistance of the filament.
12Ω
1250 Ω
122 Ω
500 Ω
Calculate the current through a 60W lamp rated for 250V. If the line voltage falls to 200V, how is the power consumed by the lamp affected.
Calculate the current flowing through 1.5 kW-250 V electric heater and also find its resistance. [3 MARKS]