HSC Physics Module 6 Electromagnetism (01/02)

• To the right

• To the left

• Into the page

• Out of the page

• Both produce DC

• Both produce AC

• Generator 1 produces DC and Generator 2 produces AC

• Generator 1 produces AC and Generator 2 produces DC

• Replacing the magnet with a stronger one

• Shortening the pendulum

• Replacing the rod with a heavier one

• Connecting the ends of the coil with a piece of copper wire

• A

• B

• C

• D

A transformer has a primary coil with 60 turns and a secondary coil with 2300 turns.

If the primary voltage to the transformer is 110 V, what is the secondary voltage?

• 2.4 x 10^-4 V

• 2.4 x 10² V

• 1.3 x 10³ V

• 4.2 x 10³ V

• The magnitude of the force on P is exactly the same as the magnitude of the force on Q at all times.

• The magnitude of the force on P is constant and the magnitude of the force on Q is zero.

• The magnitude of the force on P is constant and the magnitude of the force on Q varies with time.

• The magnitude of the force on P varies with time and the magnitude of the force on Q is constant.

What is the role of a transformer at an electrical power station?

• To reduce heating in the transmission lines by stepping up the voltage

• To reduce heating in the transmission lines by stepping up the current

• To increase heating in the transmission lines by stepping up the voltage

• To increase heating in the transmission lines by stepping up the current

• 0.23 T

• 1.1 T

• 2.1 T

• 4.3 T

• A

• B

• C

• D

• The magnet will take the same time to hit the floor in both cases.

• The magnet will come to rest in the middle of the copper tube.

• The magnet will take longer to fall through the copper tube.

• The magnet will take longer to fall through the plastic tube.