If an ammeter reading increases when a thicker wire replaces a thinner one of the same material and length, what is the most likely reason?

Question

If an ammeter reading increases when a thicker wire replaces a thinner one of the same material and length, what is the most likely reason? — Exam MCQ

rrbjepyq.in · Accepted Answer

D. The resistance of the thicker wire is lower, allowing more current — Resistance is R = ρL/A. For the same material and length, increasing the cross-sectional area decreases resistance. Hence a thicker wire has lower resistance.

rrbjepyq.in · Answer

A. The wire's resistivity increased

rrbjepyq.in · Answer

B. The voltage across the wire decreased

rrbjepyq.in · Answer

C. The wire's length is shorter

If an ammeter reading increases when a thicker wire replaces a thinner one of the same material and length, what is the most likely reason?

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