Two electric bulbs of 100W each are used for 8 hours daily. Find the cost of using them for 1 day if the rate is 75 paise per unit

In a household, an electric bulb of 100W is used for 10 hours and an electric heater of 1000W is used for 2 hours Calculate the cost of using bulb and heater for 30 days take the cost of one unit of electrical energy is 5 rupees.

An electric heater of 1000W is used for 2 hours a day. What is the cost of using it for a month of 28 days, if 1 unit costs is 3.00 ?

Two electric bulbs of 100 W each is used for 10 hours in the month of June. Write the following steps in sequential order to find the numbe of units of electricity consumed in the month of June. (A) The number of units of electricity consumed by both bulbs in the month of June is the total elec-trical energy consumed by bulbs expressed in W h divided by 100 W h . (B) Note the rated power of each electric bulb, time of electrical consumption of each bulb per day from the given data. (C ) We know, one electrical unit = 1 kW h or 1000 W h . (D) Calculate the amount of electrical energy con-sumed by both the bulbs in the month of June using, (sum of the electrical power of both the bulb) xx (time of consumption in one day) xx 30 days.

An electric heater of 1000W is used for 2 hours a day. What is the cost of using it for a month of 28 days, if 1 unit costs ? 3.00 ?

An electric bulb of 100 W is used for 9 hours per day. What will be the units of energy consumed in 1 day by the bulb?

An electric refrigerator rated 400 W and an electric bulb rated 100 W are operated 10 hours / day. What is the cost of the energy to operate them for 10 days at Rs. 8.00 per kWh ?

An electric refrigerator rated 400 W and an electric bulb rated 100 W are operate 10 hours/day . What is the cost of the energy to operate them for 10 days at ₹ 8.00 per kWh?