Question

When power and resistance is given, how do you calculate for current?
Say power is 750 watts and resistance is 15 ohms

Answer 1

Answer:

Here I gave some formulas take help of this..

Explanation:

To find the Voltage, ( V ) [ V = I x R ] V (volts) = I (amps) x R (Ω)

To find the Current, ( I ) [ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)

To find the Resistance, ( R ) [ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)

To find the Power (P) [ P = V x I ] P (watts) = V (volts) x I (amps)

Hope it will help

Answer 2

Answer:

current,I = 7 amperes

Explanation:

Given :-

• Power, P = 750 watts
• Resistance, R = 15 ohms

We know that,

$\textit{Power }= { \textit{I}}^{2} \textit{R}$

$750 = {I}^{2} \times 15$

$\frac{750}{15} = I$

${I}^{2} = 50$

$I = \sqrt{50}$

$\boxed{I = 7 \: amperes}$