Advertisements
Advertisements
प्रश्न
1 kWh = ________ J
Advertisements
उत्तर
1 kWh = 1-kilowatt × 1 hour
= 1000 j s-1 x 3600 s
= 3.6 x 106 j
APPEARS IN
संबंधित प्रश्न
Which particles are responsible for current in conductors?
Define kilowatt-hour.
The diagram below shows a magnetic kept just below the conductor AB which is kept in North South direction.
(i) In which direction will the needle deflect when the key is closed ?
(ii) Why is the deflection produced ?
(iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB ?
(iv) Name one device which works on this principle.
An electric current is passed through a metallic wire. The wire gets heated up. Give the reason. Is it possible to melt the wire by passing a heavy current?
Mention three uses of the carbon arc.
Household wiring for lamp connections can either be done in parallel or in series.Which one would you prefer? Give a reason for your answer.
Of the three connecting wires in a household circuit: Which two of the three wires are at the same potential? In which of the three wires should the switch be connected?
What is the function of the split rings in a d.c. motor?
A family uses a light bulb of 100W, a fan of 100W, and a heater of 1000W, each for 8 hours a day. If the cost of electricity is Rs. 2 per unit, what is the expenditure to the family per day, on electricity?
