Magnetism_True/False

Question 1

The magnetic field of a conductor is made weaker when it is twisted into a loop

Answer 1

false

Question 2

when using the right hand rule for the motor principle, your thumb represents the direction of the force on the conductor

Answer 2

false

Question 3

a motor converts electrical energy to kinetic energy

Answer 3

true

Question 4

in electromagnetic induction, the induced field opposes the inducing field

Answer 4

true

Question 5

The core of a transformer helps to conduct the current to the coils

Answer 5

false

Question 6

in a transformer, the primary coil produces the inducing field

Answer 6

true

Question 7

The N-pole of a magnet will repel the N-pole of another magnet.

Answer 7

True

Question 8

A compass can be used to detect the direction of a magnetic field.

Answer 8

true

Question 9

The magnetic field of a bar magnet is weakest at its poles.

Answer 9

false

Question 10

The closer the field lines are, the stronger the magnetic field.

Answer 10

true

Question 11

The magnetic field around a conductor becomes weaker as the distance from the conductor increases.

Answer 11

true

Question 12

If the direction of the current in a coil is reversed, the poles of the magnetic field in the coil will also be reversed.

Answer 12

true

Question 13

The strength of an electromagnet may be increased by decreasing the current in the conductor.

Answer 13

false

Question 14

Removing some coils from an electromagnet will make the magnet stronger.

Answer 14

false

Question 15

When using the right hand rule for the motor principle, your thumb represents the direction of the force on the conductor.

Answer 15

false

Question 16

A motor converts electrical energy to kinetic energy.

Answer 16

true

Question 17

A steady magnetic field will induce a steady current in a conductor.

Answer 17

false

Question 18

A current is produced in a conductor when a magnetic field is moved around it, but not when the conductor is moved through a magnetic field.

Answer 18

false

Question 19

When a bar magnet is plunged into a coil, a current is induced in the coil.

Answer 19

true

Question 20

In electromagnetic induction, the induced field opposes the inducing field.

Answer 20

true

Question 21

A galvanometer connected to the circuit of an AC generator will show a steady flow of electricity.

Answer 21

false

Question 22

An AC generator can be converted into a DC generator by replacing its slip rings with a split-ring commutator.

Answer 22

true

Question 23

The brushes of an AC generator rotate with the armature.

Answer 23

false