Advertisements
Advertisements
प्रश्न
S.I. unit and commercial unit of electrical energy are same.
विकल्प
True
False
Advertisements
उत्तर
False.
APPEARS IN
संबंधित प्रश्न
One kilowatt hour is equal to ............ joule.
What is an electric meter? Where is it fixed in our house?
State the purpose of kWh meter.
If an appliance of power P watt is used for time t hour. How much electrical energy is consumed in kWh?
What is an electric fuse? State its purpose in the household electrical circuit.
Figure shows two ways of connecting the three bulbs A, B and C to a battery. Name the two arrangements. Which of them do you prefer to use in a household circuit? Give a reason to support your answer.


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?
Assuming the electric consumption per day to be 12 kWh and the rate of electricity to be? 6.25 per unit, find how much money is to be paid in a month of 30 days?
State and define the household unit of electricity.
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.
