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Two uniform wires A and B are of the same metal and have equal masses. The radius of wire A is twice that of wire B. The total resistance of A and B when connected in parallel is
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Correct option is A
RARB=rBrA4 ⇒ RARB=124 =116 ⇒ RB=16RAWhen RA and RB are connected in parallel, then equivalent resistance Req=RARBRA+RB=1617 RAIf RA=4.25 Ω then Req=4 ΩTalk to our academic expert!
Similar Questions
A uniform wire of resistance 36 ohm is bent in the form of a circle as shown in fig The effective resistance across the points A and B is
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