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Question

State Ohm’s law. If a potential difference of 10 V is applied between the two ends of a conductor, an electric current of 0.1 A flows. Determine the resistance of the conductor. [2 + 1]

WBBSE Class X Physical Science Current Electricity 3 2022

Answer

Ohm’s Law states that the current (I) flowing through a conductor is directly proportional to the voltage (V) across it, provided the temperature remains constant.

Mathematically, it is expressed as: V = I × R

Given Data

  • Potential Difference (V) = 10 V
  • Current (I) = 0.1 A

R = V\over I = 10\over 0.1 = 100 Ω

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