Question

An appliance of power 540W is used in branch circuit if the voltage is 230V what is its amperage

Answer 1

Answer:

the amperage is 2.34

Explanation:

Power=Voltage*Current

as given:

p=540w, v=230v, I=?

P=VI

540=230I

54=23I

I=54/23

I=2.34 A

the amperage is 2.34

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Answer 2

Answer:

Explanation: we know power P= $V^{2}$  / Resistance =

230x230 v2  /540 W  as    / p(power) = R (resistance)=   52900 v2/540 = 97.96 ohm = 98 ohm

As v is given to be  230 we know from Ohm's law  V= IR {I is the current}

                    230= I X  98 [Calculated above}

   

        hence I = 230/98= 2.346 A