Electromagnet Quiz 1

Question 1

___ of the electromagnets is used to treat spinal cord injuries.

Accepted Answer

Radiation

Answer

Electric lines of force

Answer

On and off nature

Answer

Core

Question 2

One of the ways to make an electromagnet get demagnetized is by,

Accepted Answer

Increasing the flow of current

Answer

Reducing the core strength

Answer

Reducing the number of loops

Answer

Increasing the on-off process

Question 3

The electromagnet present in the ignition circuit of the car’s starter motor is used to

Accepted Answer

Attract the iron arm

Answer

Pass the current

Answer

Pushes the starter motor

Answer

Switch on the circuit.

Question 4

In order to have the strongest electromagnetic force, the current-carrying wire should be deformed into

Accepted Answer

Loops

Answer

Zig-zag

Answer

Square

Answer

Longer/shorter

Question 5

Changing the direction of the current makes the strength of the electromagnet,

Accepted Answer

No change

Answer

Weaker

Answer

Stronger

Answer

Moderate