Question

how many w are in 1 kw?
w
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1. - / 1 points

in terms of energy, what is the purpose of a toaster?
to transform heat into electrical energy.
to transform electrical energy into light.
to transform light into electrical energy.
to transform electrical energy into sound.
to transform sound into electrical energy.
to transform electrical energy into heat.

Explanation:

Step1: Unit conversion

We know that the prefix 'kilo -' (k) means \(10^{3}\). So, \(1\ kW = 1\times10^{3}\ W\)

Step2: Energy transformation of toaster

A toaster is an electrical appliance. When we plug it in, it uses electrical energy. The main purpose of a toaster is to heat the bread. According to the law of conservation of energy, it transforms electrical energy into heat energy.

Answer:

1000; To transform electrical energy into heat.