1.5kj of energy are used every second by a microwave oven, what is the power rating of the oven?

Power is the rate at which energy is consumed. When 1 J of energy is consumed in one second, the power consumed is 1 watt.

The microwave consumes 1.5 kJ of energy.

In joules, the energy consumed is 1500 J

Here, E is the energy consumed in time interval t.

The power rating of the microwave is therefore,

Thus, the power rating of the oven is 1500 W or 1.5 kW

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.