1) A current is induced by moving a magnet in and out of a coil of wire. What will happen to the induced current if you move the magnet twice as fast?

-Nothing, The induced current will not change.
-The induced current will decrease.
- The induced current will increase.
-The induced current will change directions.

2) A student connects a battery to a light bulb using wires, creating a closed simple circuit. The student connects an ammeter to the circuit and places a compass next to the wires. The student then decides to connect a second battery to the circuit. Which statement describes the changes that will occur after connecting the second battery?

- The compass will detect an increase in current, and the ammeter will detect a stronger magnetic field.

-The ammeter will detect an increase in current, and the compass will detect a weaker magnetic field.

-The ammeter will detect an increase in current, and the compass will detect a stronger magnetic field.

-The compass will detect an increase in current, and the ammeter will detect a weaker magnetic field.

3) A student is comparing a step-up transformer with a step-down transformer. Which data should she collect from each device?
- the ratio of incoming and outgoing voltages

- the ratio of the number of turns in the primary coils

-the ratio of incoming and outgoing currents

- the ratio of the number of turns in the secondary coils

4)What happens to a copper wire when it is moved across a magnetic field?

-Voltage and electric current are induced.

-Electric current is induced, but not voltage.

-It is attracted to the negative pole of the magnetic field.

-It is attracted to the positive pole of the magnetic field.