For a heater, rated 4 kW and 220 V, calculate the following:
If 1 kWh is priced at Rs 4.50, then the cost of energy consumed in 2 hours.

For a heater rated at 4kW and 220V, calculate: (a) the current, (b) the resistance of the heater, (c) the energy consumed in 2 hours, and (d) the cost if 1kWh is priced at Rs 4.60.

The rating of an electric heater is1100 w, 220V calculate the resistance when it operates at 220 v, also calculate the energy consumed in kwh in the month of November, if the heater is used daily for 4 hours at the rated voltage.

An electric heater has a rating of 3 kW, 220 V . Calculate the following (i) Current. (ii) Resistance offered by the heater. (iii) Cost of running the heate for 10 hours at the rate of ₹ 3.50 per unit.

An electric motor takes 5 amperes current from a 220 volt supply line. Calculate the power of the motor and electrical energy consumed by it in 2 hours.

If two identical heaters each rated as (1000 W, 220 V) are connected in parallel to 220 V, then the total power consumed is

If two identical heaters each rated as (1000 W, 220V) are connected are connected in parallel to 220 V, then the total power consumed is .

An electric motor takes 5 A form a 220 V line. Determine the power of the motor and the energy consumed in 4 hours

A torch bulb is rated 5V and 500 mA. Calculate (i) its power, (ii) its resistance and the energy consumed if this bulb is lighted for 4 hours.