Question

electromagnet is used in 1. led bulb 2. electric motor 3. electric heater 4.all of these​

Answer 1

I think it is electric motor thanks

Explanation:

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Answer 2

Question -:

Electromagnet is used in :

1. Led Bulb

2. Electric motor

3. Electric heater

4. All of these

Answer -:

Option (2) or Electric motor uses the electromagnet.

Additional information -:

See , when the electromagnet is placed between the other magnets . And when the current flows from the coil . Then , it produce an electric field . The poles of magnets with the poles of electromagnet helps the electric motor to work .

And the led bulb uses the electricity to work .

And the electric heater uses the solar energy or electric energy to work . We can also make solar energy with the solar panel .