O-LevelPhysicsElectricity5054/11 · May/June 2011 · Q291 Mark
Which changes both cause a decrease in the resistance of a copper wire?
Asize of wire: decrease in length, temperature of wire: lower
Bsize of wire: increase in length, temperature of wire: lower
Csize of wire: decrease in thickness, temperature of wire: higher
Dsize of wire: increase in thickness, temperature of wire: higher
✓ Correct answer
A: size of wire: decrease in length, temperature of wire: lower
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