Question

define electric power and electrical device of resistance R is connected across a source of voltage v and draw a current I drive an expression for power in term of current and resistence​

Answer 1

Electric Power,

rate of consumption of energy or rate of doing work.

P = VI

P = IR× I ........( by ohm's law)

P = I^2 × R

$that \: is \: p \: = \: {i}^{2} r$

Answer 2

Answer:

The rate at which energy is transferred by an electrical circuit is known as electric power. It measure in Watts (W).

1 W = 1 J/s

P = I V

From ohm's law,

V = I R

⇒P = I²R = V²/R