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Magnetic Effects of Electric Current

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352
(a) What current is taken by a 3 kW electric geyser working on 240 V mains? (b) What size ...
By Satkriti Roao, 4 years ago
replies 1
0
1
246
What is the function of an earth wire? Why is it necessary to earth the metallic bodies of...
By Satkriti Roao, 4 years ago
replies 1
0
1
329
An electric iron is rated at 230 V, 750 W. Calculate (i) the maximum current, and (ii) the...
By Satkriti Roao, 4 years ago
replies 1
0
1
240
Explain the importance of using in a household electric circuit (i) fuse, and (ii) earthin...
By Satkriti Roao, 4 years ago
replies 1
0
1
148
When does a fuse cut off current? How does it do it? (b) What is the maximum number of 60 ...
By Satkriti Roao, 4 years ago
replies 1
0
1
130
Distinguish between the terms ‘overloading’ and ‘short-circuiting‘ as used in domestic cir...
By Satkriti Roao, 4 years ago
replies 1
0
1
136
What type of electric fuse is used in electrical appliances like car stereos? Explain with...
By Satkriti Roao, 4 years ago
replies 1
0
1
127
(a) Of what substance is the fuse wire made? Why? (b) Explain why, a copper wire cannot be...
By Satkriti Roao, 4 years ago
replies 1
0
1
174
A fuse should always be placed in the……. wire of a mains circuit. (b) The earth wire shoul...
By Satkriti Roao, 4 years ago
replies 1
0
1
115
How should the electric lamps in a building be connected so that the switching on or off i...
By Satkriti Roao, 4 years ago
replies 1
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