Physics, 12.10.2019 22:30, velaserik1

Choose all of the statements that are true about electromagnets: 1. electromagnets are permanent and always have a magnetic field around them. 2. electromagnets can be made stronger by adding more coils to the solenoid. 3. electromagnets can be made stronger by increasing the strength of the electrical source. 4. none of the above.

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 16:20, jmackenzie7

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit

Answers: 2

continue

Physics, 22.06.2019 16:30, makaylahamrick

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.

Answers: 1

continue

Physics, 23.06.2019 01:30, ayeletstrauss

The process of a material going through a change of state from a gas to a liquid

Answers: 2

continue

Physics, 23.06.2019 02:00, juliashalnev

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.

Answers: 3

continue

Do you know the correct answer?

Choose all of the statements that are true about electromagnets: 1. electromagnets are permanent an...