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The potential difference across a copper wire is 5.0 V when a current of 0.5 A flows through it. The resistance of the wire is:
Question

The potential difference across a copper wire is 5.0 V when a current of 0.5 A flows through it. The resistance of the wire is:


A.

2.5Ω


B.

0.1 Ω


C.

5.0 Ω


D.

10.0 Ω

Correct option is D

The correct answer is (D)   ​10.0 Ω

Given:

  • Potential difference (V) = 5.0 A
  • Current (I) = 0.5 A

Formula used:
Ohm's Law states that  V = I × R

  • is the potential difference,
  • I is the current,
  • is the resistance.

Solution:
R = V/I

R = 5/0.5

R = 10.0 Ω

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