Question

What is the power formula in current electricity?

Answer 1

1. The capacity to do work is termed energy.
2. The energy expended to do work in unit time is termed as Power.
3. It is represented as P.
4. Power formula is given by
   $P=\frac{E}{t}$
   Where, $E$= the energy consumed to do work and $t$= time taken.
5. Power formula is given by
   $P=\frac{W}{t}$
   Where, $W$= work done and $t$= time taken.
6. In any electrical circuit, the power is computed making use of these three formulas
7. In regard to voltage and current, it is related as
   $$\begin{gathered} \mathrm{Power}=\mathrm{potential}\mathrm{difference}\times \mathrm{current} \\ P=V\times I \end{gathered}$$
8. In regard to current and resistance, it is related as
   $$\begin{gathered} \mathrm{Power}={\mathrm{current}}^2\times \mathrm{resistance} \\ P=I^{2}R \end{gathered}$$
9. In regard to voltage and resistance, it is articulated as
   $$\begin{gathered} \mathrm{Power}=\frac{\mathrm{potential}{\mathrm{difference}}^2}{\mathrm{resistance}} \\ P=\frac{V^2}{R} \end{gathered}$$
10. The power formula is used to compute the power, resistance, voltage and current in an electronic circuit.
11. The standard metric unit of power is the Watt.