Physics for IGCSE & O level - The Earth In Space (Section 2 - No. 39)
Two wires, X and Y, are made of the same material and are at the same temperature. Which statement explains that resistance is correct?
X and Y have the same resistance
X has double the resistance of Y.
X has four times the resistance of Y.
X has half the resistance of X.
Explanation
Resistance is proportional to length.
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