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JIPMER2013PhysicsCurrent Electricity

A 5 amp fuse wire can withstand a maximum power of 1 W in circuit. The resistance of the fuse wire is

Options

  1. A0.2
  2. B5
  3. C0.4
  4. D0.04

Correct answer

D. 0.04

Step-by-step solution

Power P=i^2 R R= P i^2 given, P=1 ~W , and i=5 ~A R= 1 (5)^2 =0.04

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