Advertisements
Advertisements
प्रश्न
S.I. unit and commercial unit of electrical energy are same.
विकल्प
True
False
Advertisements
उत्तर
False.
APPEARS IN
संबंधित प्रश्न
The unit in which we pay the cost of electricity is ..........
The electrical energy consumed in a house is measured by ...............
The purpose of an electric meter in a house is
If out of the two lighted bulbs in a room, one bulb suddenly fuses, then
For which unit do we pay our electricity bill?
If an appliance of power P watt is used for time t hour. How much electrical energy is consumed in kWh?
Draw a labelled diagram with the necessary switches to connect a bulb, a fan and a plug socket in a room with the mains. In what arrangement will you connect them to the mains?
An electric iron of power 1.5 kW is used for 30 minutes to press the clothes. Calculate the electrical energy consumed in
- kilowatt-hour
- joule.
In a premise 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW is used for 5 h per day. Find:
- Total power consumed per day,
- Total power consumed in 30 days,
- Total electrical energy consumed in 30 days.
- The cost of electricity at the rate of ₹ 6.25 per unit.
What is the resistance, under normal working conditions, of an electric lamp rated at '240 v, 60 W' ? If two such lamps are connected in series across a 240 V mains supply, explain why each one appears less bright.
