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Which of the following laws is applicable for the behaviour of a perfect gas
  • a)
    Boyle's law
  • b)
    Charle's law
  • c)
    Gay-Lussac law
  • d)
    all of the above
  • e)
    Joule's law
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following laws is applicable for the behaviour of a perfe...
Joule’s law, in electricity, mathematical description of the rate at which resistance in a circuit converts electric energy into heat energy. The English physicist James Prescott Joule discovered in 1840 that the amount of heat per second that develops in a wire carrying a current is proportional to the electrical resistance of the wire and the square of the current. He determined that the heat evolved per second is equivalent to the electric power absorbed, or the power loss.

A quantitative form of Joule’s law is that the heat evolved per second, or the electric power loss, P, equals the current I squared times the resistance R, or P = I2R. The power P has units of watts, or joules per second, when the current is expressed in amperes and the resistance in ohms.
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