An electric heater is rated 2 kW,220 V. If a fuse is to be connected to it, should it be rated 5A or 15A?

An electric bulb is rated at 220V,and 100W. What is its resistance?

An electric bulb is rated at 220V,and 400W. What is its resistance?

An electric heater is rated 1500 W. How much energy does it use in 10 hour?

How much current will an electric heater coil draw from a 220 V source, if the resistance of the heater coil is 100 Omega ?

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

An electric heater and an electric bulb are rated 500W. 220V and 100W, 220V respectively. Both are connected in series to a 220V d.c. mains. Calculate the power consumed by (i) the heater ana (ii) electric bulb.

An electric heater consumes 4.4 kW power when connected with a 220V line voltage. Calculate the current flowing in the heater.

An electric heater consumes 4.4 kW power when connected with a 220V line voltage. Calculate the energy consumed in 2hours.

An electric bulb is rated 220V and 100W. When it is operated on 110V the power consumed will be …………… .