define the term electric energy .write an expression of the electric energy consumed in an electric circuit
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The amount of total work done in maintaining electric current in the circuit for a given time is termed as electric energy.....
work has to be done to continuously maintain the flow of electric current across the conductor .. because conductor offers resistance to the flow of current...
The work done in carrying a charge Q through a potential difference V is ,
W = V × Q ( since V = W/Q )
Q = I × T (since I = Q/t)
W = VIt = I^2Rt (since V = IR)
this work done is the electric energy consumed in the circuit in time t ...
electric energy = VIt = I^2RT
Thus electric energy depends upon current I , Resistance R and Time t
work has to be done to continuously maintain the flow of electric current across the conductor .. because conductor offers resistance to the flow of current...
The work done in carrying a charge Q through a potential difference V is ,
W = V × Q ( since V = W/Q )
Q = I × T (since I = Q/t)
W = VIt = I^2Rt (since V = IR)
this work done is the electric energy consumed in the circuit in time t ...
electric energy = VIt = I^2RT
Thus electric energy depends upon current I , Resistance R and Time t
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