Question Library
Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.
Showing 1–15 of 21 verified questions
Sort by:
Physics
UTME / JAMB 2026
Magnetic Field
Solution
A horse shoe magnet is an example of
A
a magnetic oxide
B
a natural magnet
C
an electromagnet
D
a permanent magnet
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Magnetic Field
Solution
The point where no magnetic effect is felt around a magnet is
A
near point
B
far point
C
Infinite point
D
Neutral point
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Magnetic Field
Solution
The commonly used materials for shielding or screening magnetism is
A
Alumumium
B
Brass
C
Soft iron
D
Copper
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Magnetic Field
Solution
A method of demagnetization is
A
placing the magnetic bar in a solenoid
B
double-stroking the magnet with soft in n-s direction
C
heating a magnetic bar red hot and allowed to cool e-w direction
D
hammering the magnetic bar repeatedly in n-s direction
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Magnetic Field
Solution
Calculate the magnetic force on an electron in a magnetic field of flux density 10T, with a velocity of 3 x 10\(^7\)m/s at 60º to the magnetic field (e = 1.6 x 10\(^{-19}\)C)
A
4.8 x 10\(^{-11}\)N
B
4.6 x 10\(^{-12}\)N
C
4.16 x 10\(^{-11}\)N
D
4.3 x 10\(^{-11}\)N
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Magnetic Field
Solution
The device for measuring the angle of dip is
A
Dip circle
B
Dip inclination
C
Dip variation
D
Dip meter
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2024
Magnetic Field
Solution
A galvanometer of full-scale deflection 10 mA has a resistance of 5\(\Omega\). Calculate the shunt needed to convert it to measure currents of 2 A.
A
0.025\(\Omega\)
B
0.050\(\Omega\)
C
0.250\(\Omega\)
D
0.500\(\Omega\)
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2024
Magnetic Field
Solution
In storing magnets, the keeper is used to
A
cancel the effect of the earth's magnetism
B
reduce self demagnetization
C
protect the magnet from stray electric field
D
increase the strength of the magnet.
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2023
Magnetic Field
Solution
Which of the following statements is correct about the angle of dip at various points on Earth?
A
The angle of dip is zero at the equator and 90 degrees at the magnetic poles.
B
The angle of dip is greater at higher altitudes than at lower altitudes
C
The angle of dip is positive in the northern hemisphere and negative in the southern hemisphere.
D
The angle of dip is constant at all points on Earth
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2023
Magnetic Field
Diagram
Solution
In the diagram above, if the south poles of two magnets stroke a steel bar, the polarities at X and Y will respectively be
A
south and north
B
north and south
C
north and north
D
south and south
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2022
Magnetic Field
Solution
A freely suspended compass needle on the earth's surface settles in a plane called----------
A
geographic meridian
B
magnetic meridian
C
magnetic declination
D
isoganals
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2022
Magnetic Field
Solution
The magnetic material produced from the chemical combination of metal oxides and has a very high resistance to electric current is called
A
ferrite substance
B
paramagnetic substance
C
ferromagnetic substance
D
diamagnetic substance
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2022
Magnetic Field
Solution
A bar magnet is divided into two pieces, which of the following statement is correct?
A
two new magnets are created
B
the magnetic field of each separate piece becomes stronger
C
the electric field is created
D
the bar magnet is demagnetized
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2022
Magnetic Field
Solution
A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?
A
the magnet is moved towards the stationary solenoid
B
there is no relative motion
C
the magnet is moved away from the stationary solenoid
D
the solenoid is moved away from the stationary magnet
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2022
Magnetic Field
Solution
A magnet relay is a device used for?
A
reading the magnitude of magnetic flux
B
controlling another circuit carrying larger current
C
turning in sports
D
storing magnetic field
medium Difficulty
Study Explanation