Advertisements
Advertisements
Question
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
Advertisements
Solution
The heat produced is proportional to the resistance of the wire.
RELATED QUESTIONS
Which particles are responsible for current in conductors?
What is consumed using different electrical appliances, for which electricity bills are paid?
An electric fan runs from the 230 V mains. The current flowing through it is 0.4 A. At what rate is electrical energy transferred by the fan?
The diagram below shows a circuit containing a lamp L, a voltmeter and an ammeter,. The voltmeter reading 3 V and the ammeter reading is 0.5 A.
What is the resistance of the lamp?
What is the power of the lamp?
1kWh = …….. J
An electric kettle is rated 2.5 kW, 250 V. Find the cost of running the kettle for two hours at Rs. 5.40 per unit.
State the reason why, in a three pin plug, the earth pin is longer and thicker than the other two.
A bulb is connected to a battery of e.m.f. 6V and internal resistance 2Ω A steady current of 0.5A flows through the bulb. Calculate the total energy supplied by the battery in 10 minutes.
A fuse is rated 5 A. Can it be used with a geyser rated 1540 W, 220 V Write Yes or No. Give supporting calculations to justify your answer.
