24. (a) An electrical bulb is rated 220V - 100W. What is the resistance of the bulb? (b) Three such bulbs run simultaneously for 4 hours. What is the energy consumed? (c) Calculate the cost of running these appliances if the per unit cost is Rs 2.80.

Open in App

Solution

Suggest Corrections

Similar questions

A bulb is rated at 200V-100W. What is it's resistance? Five such bulbs burn for 4 hours. What is the electrical energy consumed? Calculate the cost if the rate is 4.60 ruppes per unit.

Q. A bulb is rated at 200V,40W. What is the resistance? 5 such bulbs are lighted for 5 hours. Calculate the electrical energy consumed. Find the cost if the rate is Rs 5.10 per kWh

Q. A house is fitted with 4 lamps 60w each, 2 fans rated 100w each, an electric kettle rated 2KW. If the energy costs Rs. 5.50 per KWh, calculate the monthly bill (of 30 days) for running the appliances for 5 hours a day.

An electrical appliance rated $1000 W, 250 V$ is connected to mains of voltage $250 V$ . Calculate the cost of the energy consumed in 20 hours, given that the unit cost is Rs 4 per kWh.

A bulb is rated at 230V- 100W. What is its resistance? Two such bulbs are switched-on for 4 hours continously. How much electrical energy is consumed by these two bulbs together?

Join BYJU'S Learning Program