An electrical device that has a specification of 200 v, 80 ohms, then the power generated by the electric tool is
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An electrical device that has a specification of 200 v, 80 ohms, then the power generated by the electric tool is
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To Find:
To calculate a power used by an electrical device that has to do with voltage and resistance
Formula Used:
[tex]\boxed {\bold {P = V \times I}}\:[/tex]
Details about:
P = electric power (W)
V = voltage (V)
I = electric current (A)
As for calculating electric current, the following formula can be used:
[tex]\boxed {\bold {I = \frac {V}{R}}}\: [/tex]
Under the condition :
I = strong electric current (A)
V = voltage (V)
R = resistance (Ω)
So, if what is known is resistance and voltage, to calculate it you can use a practical formula:
[tex]\bold {P = V \times I} \\ \bold {P = V \times \frac {V} {R}} \\ \boxed {\bold {P = \frac {V ^ {2} } {R}}} [/tex]
Completion Step:
Known :
V = mains voltage = 200 V
R = electrical resistance = 80 Ω
Asked: P = power = ... W
Answer:
[tex]\sf\:P = \frac {V ^ {2}} {R} \\ P = \frac {200 ^ {2}} {80} \\P = \frac {40000} {80} = 500 \:W [/tex]
Explanation:
We know that ,
➡Power = (voltage)^2/resistance
➡Power = 200×200/80
➡Power=500 Watt
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