Find the cost of electricity for running an electric motor of `1` hp the `5` hrs a day at the rate of Rs `1.50` per unit of electricity for the month of November

Find the cost of electricity for running an electric motor of 1H.P. for 5hrs day at the rate of Rs. 1.50 per unit of electricity in the month of November.

Find the cost of fencing a rectangular park of length 150 m and breadth 50 m at the rate of Rs 10 per metre.

The cost of 2Rs/kWh of operating an electric motor for 10hours takes 10amp at 110V is:

An electric appliance of rating 1600 W is running for 2 hrs/day. If the cost of unit is 3.00, find the cost of energy consumed for the month of November.

Write commercial and SI units of energy. Calculate the cost of electric energy consumed by an electric heater rated with 50 W used for 2 hours daily in the month of April. The cost of one unit of electric energy is Rs. 5.

(a) Define 1 watt. (b) State the commercial unit of electric energy. Express it in terms of SI unit of energy. (c) An electric refrigerator rated as 750 W operates 8 hours per day. What is the cost of the energy to operate it for the month of June at Rs. 2.50 per kWh ?

Calculate the total cost of running the following electrical devices in the month of September, if the rate of 1 unit of electricity is ₹6.00. (i) Electric heater of 1000 W for 5 hours daily. (ii) Electric refrigerator of 400 W for 10 hours daily.