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The potential difference between the two end terminals of an electric heater is 220 V and the current through it is 0.5 A. What would be the current through the heater if the potential difference across the terminals of the heater is reduced to 120 V?

Options

  1. A1.0 A
  2. B0.5 A
  3. C0.27A
  4. D0.7A

Correct answer

C. 0.27A

Step-by-step solution

We know that V = IR , Resistance of the heater remain same so R₁=R₂ Given v ₁=220 volt V ₂=120 volt aligned & I ₁=0.5 ~A & I ₂=? & R ₁= R ₂ & ~V ₁ / I ₁= V ₂ / I ₂ & 220 / 0.5=120 / I ₂ & I ₂=0.27 ~A aligned

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