A student investigates electromagnetic induction. She moves the N pole of a magnet quickly towards a coil of wire. There is a reading on the galvanometer.
Question 2
2.
Question 3
3.
In the experiment below, the effect on a current-carrying conductor in an external magnetic field is studied.
The conductor experiences a force upwards and moves in the direction of the arrow.
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1
Question 6
6.
Consider the following circuit. The battery has negligible internal resistance.
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1
Consider the following circuit. The battery has negligible internal resistance. You can assume the resistors are identical.
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1
The diagrams show a current-carrying wire with an arrow in the direction of the current. Which diagram shows the magnetic field produced by the current?
A student investigates electromagnetic induction. She moves the N pole of a magnet quickly towards a coil of wire. There is a reading on the galvanometer.
What can she do to get a bigger reading?
Hold the bar magnet stationary inside the coil.
Move the bar magnet slowly away from the coil.
Use a coil of wire with fewer turns on it.
Use a stronger bar magnet.
This magnet is removed from the coil.
Which option is correct?
P = induced north pole, induced current is from X to Y
P = induced north pole, induced current is from Y to X
P = induced south pole, induced current is from X to Y
P = induced south pole, induced current is from Y to X
Question 4
4.
Question 5
5.
A
B
C
D
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
What is the direction of the current?
into the page
out of the page
What is the polarity of the magnet?
A is North, B is South
B is North, A is South
When the switch is closed, what happens to the total resistance in the circuit?
increases
decreases
remains the same
When the switch is closed, the reading on the voltmeter will ....
increase
decrease
remain the same
When the switch is closed, what happens to the total resistance in the circuit?
increases
decreases
remains the same
When the switch is closed, what happens to the reading on the ammeter?