Physics
Which of the cables, one rated 5 A and the other rated 15 A will be of thicker wire? Give a reason for your answer. [Hint :To carry heavy current, the resistance of wire should be low, so its area of cross section should be large].
Household Circuits
40 Likes
Answer
The thicker wire is the one which is rated 15 A.
In order to carry heavy current, the resistance of wire should be low, so it's area of cross section should be large. Therefore, as large current is passing through the second wire hence, it will be thicker.
Answered By
26 Likes
Related Questions
Why is it necessary to have an earth wire installed in a power circuit, but not in a lighting circuit?
Give two characteristics of high tension wire.
The diagram in figure shows three lamps and three switches 1, 2 and 3 connected with two cells.
(a) Name the switch/switches to be closed so as to light all three lamps.
(b) How are then the lamps connected : in series or in parallel.
Describe with the aid of a diagram some form of a fuse, which is used in the electric lighting circuit of a house. Give two reasons why a fuse must not be replaced by an ordinary copper wire.