Two lamps, one rated 100W at 220V, and the other 60w and 220V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220V?

Several electric bulbs designed to be used on a 220V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220V line if the maximum allowable current is 5A?

An electric lamp of 100Omega , a toaster of resistance 50Omega , and a water filter of resistance 500Omega are connected in parallel to a 200V source. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances, and what is the current through it?

The electric mains in house are marked 220V, 50 Hz. Write down the equation of instantaneous voltage.

A light bulb is rated at 60w for a 230 v supply. Find the rms current through the bulb