Question

An electric kettle contains a 720w heating unit. calculate the current it takes from a 240v mains​

Answer 1

Answer:

Current taken is 3 A.

Explanation:

It is given that:

Power drawn, $P = 720 W$

Voltage of mains, $V = 240 V$

We have to find the Current that the heating unit takes from the 240V mains which has a power of 720W.

Let us have a look about the formula:

$P= V \times I$

Where P is the power in Watt

V is the voltage in Volt

And I is the Current in Ampere

So, from the above formula:

$I = \dfrac{P}{V}$

Putting the values of P and V to find I:

$I = \dfrac{720}{240}\\\Rightarrow I = 3\ Amp$

So, Current taken is 3 A.

Answer 2

Answer:

So, current taken is 3A.