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प्रश्न
State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
उत्तर
Joule's law of heating states that the heat dissipated across a resistor is directly proportional to:
- The square of the current flowing through it.
- The resistance of the conductor.
- Duration of the flow of current.
H = `"I"^2 "Rt"`
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संबंधित प्रश्न
An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater.
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(a) How much charge flows around the circuit each second?
Which of the following characteristic is not suitable for a fuse wire?
(a) thin and short
(b) thick and short
(c) low melting point
(d) higher resistance than rest of wiring
Give Scientific reason
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How can overloading be avoided?
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The electric fuse works on the Joule heating principle.
