A house is fitted with `20` length of `60` watt each `10` fans consuming `0.5` ampere each an electric kettle of resistance `110 Omega`. If the energy is supplied at `120 V` and costs `150` paise `kWh`, calculate monthly bill for running these appliances for 6 hours a day (1 length = 30 days).

A house is fitted with 20lamps of 60W each, 10fans consuming 0.5A each and an electric kettie of resistance 110Omega . If the energy is supplieda at 220V and costs 75 paise per unit, calculate the monthly bill for running appliances for 6 hours a day. take 1 mont =30days.

A house is fitted with 10 lamps rated 100W each, four fans each containing 0.5A. An electric kettle of resistance 100 Omega and an electric iron of 12Omega . If the energy is supplied at 200V and costs 50paise per kWh, calculate the bill for running the appliances four hours in a day for the month of February.

Radha's house is fitted with 2 lamps of 60W each and 2 fans consuming 0.4A each . If energy is upplied at 200V and coats Rs. 2.50 per kWh. Find the monthly bill if all the appliances run for 10 hours a day.

A house if fitted with a motor of 1 H.P., 5 lamps consuming 0.2 A each and two fans of 80W each. If all the appliances work for 5 hours per day, calculate the montly bill. Energy is supplied at 220V and costs 20 paise per kWh. Take one month=30 days.

Two bulbs of 100 W each and two coolers of 250 W each, work on an average 6 hours a day. If the energy costs Rs. 1.75 per kWh , calculate the monthly bill and the minimum fuse rating when power is supplied at 250 V .

A house is fitted with seven tubelights of rating 220 V, 40 W each , two bulbs of rating 220 V, 60 W each, five fans each drawing a current of 0.4 at 220 V , and a heater of resistance 48.4 Omega . The main line power supplied to the house is at 220 V . Calculate the bill for the month of january if tubelights and bulbs are used for 6 h daily, fans for 1 h daily , and heater for 10 h daily. The electricity is to cost Rs. 2 per unit.

In a hostel, 160bulb, of resistance 1200Omega eachar lighhted on a 220V supply every day from 6.P.M to 11.P.M. If the electrical energy costs 25paise per kilowatt hour, find the cost of lighting the hostel for a mont of 30days.

A copper electrical kettle weighing 1 kg contians 0.5 kg of water at 20@C . It takes 10 minutes to raise the temperature to 100^@C . If the electric energy is supplied at 220V, calculate the strength of the current,assuming that 20% heat is washed. Specific heat of copper is 0.1.

In a house there are ten 60-watt lamps. Three 40-watt flourorescent tubes and three 40-watt fans. When all these are switched on what is the current drawn from the mains if the supply voltage is 220V? Calculate the power drawn and the cost for using them for 6hours daily in a month of 30 days.( 1 B.O.T. unit costs 30 pasise).

In a house there are four bulbs each of 50W and 5 fans each of 60W. If they are used at the rate of 6 hours a day, the electrical energy consumed in a month of 30 days is