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JEE Main202116 Mar 2021Evening ShiftPhysicsCurrent ElectricityActual

A resistor develops 500 J of thermal energy in 20 s when a current of 1 . 5 A is passed through it. If the current is increased from 1 . 5 A to 3 A , what will be the energy developed in 20 s .

Options

  1. A1500   J
  2. B1000   J
  3. C500   J
  4. D2000   J

Correct answer

D. 2000   J

Step-by-step solution

500 = 1 . 5 2 × R × 20 E = 3 2 × R × 20 E = 2000   J

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