How much electrical energy is used by the river cooker oven rated 800 W ,230 V is switched on for 30 minutes

E = 1440 kJ

Explanation:

It is given that,

Power of a cooker oven is 800 W

Voltage at which it is operated is 230 V

Time, t = 30 minutes = 1800 seconds

We need to find the electrical energy used by the cooker oven. The product of power and time is equal to the energy consumed. So,

So, electrical energy of 1440 kJ is consumed by the cooker oven.

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c) up is the direction the magnetic force is acting on the charge.