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State the factors on which amount of heat produced depends?

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State the factors on which amount of heat produced depends?

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The amount of heat produced in a wire depends on

  • Its material – better conductors produce less heat; e.g. Elements of electric appliances are made of nichrome whereas connecting wires are made up of copper which is a better conductor so they do not get heated up as the element.
  • Its length – as length increases heat produced increases; e.g. elements are coiled in heaters to increase length.
  • Thickness – as thickness increases heat produced decreases; e.g. lead wires of iron, heater etc. are thicker than normal connecting wire so that they don’t get heated up easily.

 

सरल धारा या दिष्ट धारा और प्रत्यावर्ती धारा किसे कहते है? What is simple current or direct current and alternating current? 

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