Answer:
Electrical energy is defined as the overall work done in an electrical circuit.
We all know that energy specifies the amount of work done to move an object. And we know in an electrical circuit, electric charges show movement. Thus the work done on the electric charges in order to cause movement is known as electrical energy.
We know
I = Q/t
So we can write
Q = I t
Thus on substituting the value of Q, we get
W = VI. t
Therefore, energy is given as
E = VI.t
Energy is measured in joules or watts-sec.
Since V = IR
E= I2R. t
Or I = V/R
Thus E = V2t/R
Electrical Power is defined as the rate at which work is done on an electrical system. As we have discussed recently that doing work generates energy. Thus power can be given as the rate of consumption of electrical energy.
As power deals with the rate of consumption or gener
ation thus, is referred as energy consumed/generated per unit time. Now we are aware that work done is given as
W = VQ
Thus the input electrical power will be:
P = VQ/t
Since I = Q/t
Thus P = VI
Electrical energy and electrical power are the two major terms associated with electrical and electronics system. The fundamental difference between electrical energy and electrical power is that electrical energy represents the amount of work done that causes electric current to flow through a circuit. As against electrical power defines the rate at which work (basically movement of charges) is done in an electrical circuit. And the rate is specified according to unit time.
Explanation:
Hope it helps☺️❣️
