An electric kettle has a resistance of 30Ω. What current will flow when it is connected to a 240 V supply? Find also the power rating of the kettle.

To solve this problem, we will use Ohm's Law and the formula for power.

1. Ohm's Law states that the current (I) is equal to the voltage (V) divided by the resistance (R). In this case, the voltage is 240V and the resistance is 30Ω. So, we can calculate the current as follows:

   I = V / R I = 240V / 30Ω I = 8A

So, the current that will flow when the kettle is connected to a 240V supply is 8 Amperes.

2. The power (P) can be calculated using the formula P = V * I. Now that we know the current, we can calculate the power as follows:

   P = V * I P = 240V * 8A P = 1920W

So, the power rating of the kettle is 1920 Watts.