Question

Derive an expression for electric energy in form of
current,potential difference
and time for which current pass a threw
a conductor?​

Answer 1

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Answer:

this is called Joule's law of heating.

All materials offer resistance to the flow of current through them. So some external energy is required to make the current flow. This energy is provided by the battery. Some of this energy gets dissipated as heat energy, so the resistor becomes hot.  

Work done in carrying a charge Q through a potential difference V is given as  

Also, Q =  I  t  

Using Ohm's law, V =  I R

W =  I 2 Rt  

This work done in carrying the charge th

rough the wire appears as the heat produced. i.e., H = V I t =  I 2 Rt.

this energy is dissipated as heat energy.

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