MHT CET Physics question

Physics Alternating Current MHT CET

Two cable of copper are of equal length one of them has a single wire of area of cross-section A, while the other has 10 wires of cross-section area A/10 each give their suitability for transporting AC and DC

(A)only single strand for DC and for AC
(B)only multiple strand for AC and for DC
(C)only multiple strand for AC, either for DCCorrect
(D)only multiple strand for DC either for AC

Answer: (C)

Solution

Both cables have the same total cross-section, so their d.c. resistance is the same and either may be used for d.c.; for a.c. the skin effect makes current

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-081801