A and B are two points on a uniform ring of resistance 15 Ω…

Physics Current Electricity Specific, Equivalent, Electric Resistance and Resistivity MCQ (Single Correct)

A and B are two points on a uniform ring of resistance 15 Ω Ω . The < AOB = .The equivalent resistance between A and B is

1.64 Ω Ω

2.84 Ω Ω

4.57 Ω Ω

2.64 Ω Ω

Text Solution

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The correct answer is:

Resistance per unit length of ring,

Length of sections ADB and ACB are and

Resistance of section ADB,

and resistance of section ACB,

Now, and are connected in parallel between A and B then

Putting rad and

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