An airport worker uses an electromagnetic sweeper as he drives down the taxiway for an airplane. What adjustment can the worker make to cause the magnetic sweeper to be stronger when picking up debris (junk) on the runway?(1 point)

Question

Responses

He can turn off the electric current causing it to pick up larger objects.
He can turn off the electric current causing it to pick up larger objects.

She can lower the magnet closer to the ground, to pick up rubber or other bits of wood.
She can lower the magnet closer to the ground, to pick up rubber or other bits of wood.

He can increase his speed.
He can increase his speed.

She can increase the electrical power to the wire in the electromagnet.
She can increase the electrical power to the wire in the electromagnet.
Question 2
A burglar knows he needs 40 N of force to overpower a magnetic door lock. What would be a way to increase the strength of the electromagnet in the door lock, and keep the burglar out?(1 point)
Responses

Decrease the number of coils of wire in the electromagnet.
Decrease the number of coils of wire in the electromagnet.

Increase the number of coils of wire in the electromagnet.
Increase the number of coils of wire in the electromagnet.

Decrease the voltage to the electromagnet.
Decrease the voltage to the electromagnet.

Place a metal strike plate over the lock.

Answer 1

Question 1: To make the magnetic sweeper stronger when picking up debris, the correct response would be:

She can increase the electrical power to the wire in the electromagnet.

Increasing the electrical power to the wire enhances the strength of the electromagnet, allowing it to pick up more debris.

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Question 2: To increase the strength of the electromagnet in the door lock to keep the burglar out, the correct response would be:

Increase the number of coils of wire in the electromagnet.

Increasing the number of coils enhances the magnetic field produced by the electromagnet, thereby increasing the force needed to overcome the lock.