A uniform wire of resistance is stretched uniformly so that its length becomes three…
PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
A uniform wire of resistance R is stretched uniformly so that its length becomes three times its original value. Assuming its volume remains constant and temperature unchanged, what is its new resistance?
(a) 6R
(b) 3R
(c) 3R
(d) 9R