Question 1.4 [2 marks]

Question

The north pole of a bar magnet is PULLED away from a solenoid as shown in the
sketch below.
Figure 3: Bar magnet pulled out a solenoid.
The induced pole represented
by X
The direction of the induced
current.
A NORTH A to B
B NORTH B to A
C SOUTH A to B
D SOUTH B to A
Question 1.5 [2 marks]
The CORRECT unit for the rate of flow of charge is:
A ohm
B volt
C watt
D ampere

Answer 1

Question 1.4: When the north pole of the bar magnet is pulled away from the solenoid, according to Lenz's Law, the solenoid will induce a current that creates a magnetic field opposing the change. Since the north pole is moving away, the induced current will create a north pole at the end of the solenoid facing the magnet to oppose the decrease in magnetic field.

Thus, the correct answer is: A NORTH A to B

Question 1.5: The correct unit for the rate of flow of charge is the ampere, which is defined as one coulomb per second.

So, the answer is: D ampere