Magnetism and Electromagnetism Practice Questions
GCSE · GCSE Physics · 149 free MCQs with instant results and detailed explanations.
149
Total
47
Easy
77
Medium
25
Hard
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Sample Questions from Magnetism and Electromagnetism
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What happens when a current-carrying wire is placed in a magnetic field?
A.
It experiences a force.
B.
It becomes a magnet.
C.
It generates heat.
D.
It loses its resistance.
Show Answer & Explanation
Correct Answer: A
A current-carrying wire in a magnetic field will experience a force due to the interaction between the magnetic field and the magnetic field created by the current in the wire.
Q2
Easy
If the north pole of a magnet is brought near the north pole of another magnet, what will occur?
A.
Attraction between the magnets.
B.
Repulsion between the magnets.
C.
No interaction occurs.
D.
One magnet will heat up.
Show Answer & Explanation
Correct Answer: B
Like poles of a magnet repel each other; thus, when the north pole of one magnet approaches the north pole of another, they will repel each other.
Q3
Easy
What is the effect of increasing the current in a solenoid on the strength of the magnetic field it produces?
A.
It decreases the magnetic field strength.
B.
It has no effect on the magnetic field strength.
C.
It increases the magnetic field strength.
D.
It reverses the magnetic field direction.
Show Answer & Explanation
Correct Answer: C
Increasing the current in a solenoid increases the strength of the magnetic field produced inside and around the solenoid, according to Ampรจre's law.
Q4
Medium
What happens to the magnetic field strength as you move away from a straight current-carrying wire?
A.
It increases.
B.
It decreases.
C.
It remains constant.
D.
It reverses direction.
Show Answer & Explanation
Correct Answer: B
The magnetic field strength decreases as you move away from a straight current-carrying wire due to the inverse relationship with distance from the wire.
Q5
Medium
Which of the following materials is NOT typically used to make permanent magnets?
A.
Iron
B.
Cobalt
C.
Nickel
D.
Copper
Show Answer & Explanation
Correct Answer: D
Copper is not typically used to make permanent magnets because it is not ferromagnetic, unlike iron, cobalt, and nickel.
Q6
Medium
What phenomenon explains why a compass needle points north?
A.
Electromagnetic induction
B.
Earth's magnetic field
C.
Magnetic domains
D.
Faraday's law
Show Answer & Explanation
Correct Answer: B
A compass needle points north because it aligns with Earth's magnetic field, which has a magnetic north pole near the geographic north pole.
Q7
Medium
Which of the following is true about the direction of the magnetic field around a current-carrying conductor?
A.
It is always vertical.
B.
It forms closed loops around the conductor.
C.
It points in the direction of the current.
D.
It has no direction.
Show Answer & Explanation
Correct Answer: B
The magnetic field around a current-carrying conductor forms closed loops, as described by the right-hand rule, indicating the field lines surround the wire in a circular pattern.
Q8
Hard
A coil of wire is wound around a soft iron core and connected to a battery. Which of the following statements best describes what happens as the current flows through the coil?
A.
The coil becomes an electromagnet with a magnetic field that can be turned on and off.
B.
The soft iron core demagnetizes the coil, making it ineffective as a magnet.
C.
The magnetic field remains constant even after the current is switched off.
D.
The coil generates a permanent magnetic field in the core.
Show Answer & Explanation
Correct Answer: A
When current flows through the coil, it creates a magnetic field around itself, and the soft iron core enhances this effect, allowing the coil to function as a temporary electromagnet that can be turned on and off by controlling the current.
Q9
Hard
A solenoid with a length of 1 meter and an area of 0.01 mยฒ carries a current of 5 A. If the permeability of free space is 4ฯ ร 10^-7 Tยทm/A, what is the magnetic field strength inside the solenoid?
A.
5 ร 10^-5 T
B.
2 ร 10^-6 T
C.
1.57 ร 10^-5 T
D.
3.14 ร 10^-5 T
Show Answer & Explanation
Correct Answer: C
The magnetic field strength (B) inside a solenoid can be calculated using the formula B = ฮผโ(nI), where n is the number of turns per unit length. In this case, with a simplified example assuming 100 turns, we calculate B to be approximately 1.57 ร 10^-5 T.
Q10
Hard
A solenoid produces a magnetic field when an electric current flows through it. If the current is doubled while keeping the number of turns and the length of the solenoid constant, what happens to the strength of the magnetic field inside the solenoid?
A.
It doubles.
B.
It triples.
C.
It increases by a factor of four.
D.
It remains the same.
Show Answer & Explanation
Correct Answer: A
The strength of the magnetic field inside a solenoid is directly proportional to the current passing through it. Thus, if the current is doubled, the magnetic field strength also doubles.
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Magnetism and Electromagnetism โ GCSE GCSE Physics Practice Questions Online
This page contains 149 practice MCQs for the chapter Magnetism and Electromagnetism in GCSE GCSE Physics. The questions are organized by difficulty โ 47 easy, 77 medium, 25 hard โ so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.