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Manipal MET2021PhysicsCurrent Electricity

. A coil of wire of resistance 50 is embedded in a black of ice and a potential difference of 210 V is applied across it. The amount of ice which melts in 1 s is :

Options

  1. A0.262 g
  2. B2.62 g
  3. C26.2 g
  4. D0.0262 g

Correct answer

B. 2.62 g

Step-by-step solution

aligned & Heat produced = V^2 t 4.2 R =mL & or m= V^2 t 4.2 R L = .(210)^2 1 ) 4.2 50 80 =2.62 ~g aligned

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