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NEET2004PhysicsCurrent ElectricityActual

A wire of resistance R is divided in n equal parts, then these parts are joined in parallel, the equivalent resistance of the combination will be

Options

  1. An R
  2. BR n
  3. Cn R
  4. DR n^2

Correct answer

D. R n^2

Step-by-step solution

Resistance of one part R n Now equivalent resistance of n parts each of resistance R n in parallel is given by R^ = R / n n = R n^2

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