JAMB and WAEC Physics questions

829 questions with answers and explanations. Tap an option to check yourself.

All JAMB WAEC

Question 481· Magnets and magnetic fields· JAMB
The angle of dip at the magnetic equator is
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Answer: A. 0°
Explanation and discussion
Question 482· Magnets and magnetic fields· JAMB
The magnetic field round a straight current-carrying wire consists of
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Answer: D. concentric circles round the wire
Explanation and discussion
Question 483· Magnets and magnetic fields· JAMB
The best way to demagnetise a bar magnet is to
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Answer: D. place it in a solenoid carrying alternating current and slowly withdraw it
Explanation and discussion
Question 484· Magnets and magnetic fields· JAMB
The angle between the geographic meridian and the magnetic meridian is called the
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Answer: C. angle of declination
Explanation and discussion
Question 485· Magnets and magnetic fields· WAEC
Which of these is a magnetic material?
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Answer: C. nickel
Explanation and discussion
Question 486· Magnets and magnetic fields· JAMB
Outside a bar magnet, magnetic field lines run from
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Answer: A. the north pole to the south pole
Explanation and discussion
Question 487· Magnets and magnetic fields· WAEC
The angle between the magnetic meridian and the geographic meridian is called the
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Answer: B. declination
Explanation and discussion
Question 488· Magnets and magnetic fields· WAEC
A magnet is best demagnetised by
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Answer: A. withdrawing it slowly from a solenoid carrying alternating current
Explanation and discussion
Question 489· Magnets and magnetic fields· JAMB
Soft iron is used as the core of an electromagnet because it
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Answer: A. is easily magnetised and demagnetised
Explanation and discussion
Question 490· Magnets and magnetic fields· JAMB
Which group of metals is strongly magnetic?
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Answer: D. iron, nickel and cobalt
Explanation and discussion
Question 491· Magnets and magnetic fields· WAEC
The angle between the magnetic and geographic meridians is the
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Answer: D. angle of declination
Explanation and discussion
Question 492· Magnets and magnetic fields· WAEC
Soft iron keepers are placed across the poles of stored bar magnets to
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Answer: C. prevent them losing their magnetism
Explanation and discussion
Question 493· Magnets and magnetic fields· JAMB
Soft iron keepers are placed across the poles of stored magnets in order to
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Answer: D. prevent self-demagnetisation
Explanation and discussion
Question 494· Magnets and magnetic fields· JAMB
A neutral point in a magnetic field is a point where
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Answer: C. the resultant magnetic field is zero
Explanation and discussion
Question 495· Magnets and magnetic fields· WAEC
Iron filings sprinkled around a bar magnet gather most thickly at
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Answer: A. the poles
Explanation and discussion
Question 496· Magnets and magnetic fields· WAEC
Magnetic shielding of a sensitive instrument is done by surrounding it with
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Answer: D. a soft iron ring
Explanation and discussion
Question 497· Measurements and units· WAEC
Which of the following quantities is measured in kg/m³?
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Answer: B. Density
Explanation and discussion
Question 498· Measurements and units· JAMB
The dimensions of momentum are
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Answer: C. MLT⁻¹
Explanation and discussion
Question 499· Measurements and units· JAMB
Which of the following is a fundamental quantity?
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Answer: D. time
Explanation and discussion
Question 500· Measurements and units· JAMB
The watt expressed in SI base units is
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Answer: D. kg m² s⁻³
Explanation and discussion

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JAMB and WAEC Physics questions

The angle of dip at the magnetic equator is

The magnetic field round a straight current-carrying wire consists of

The best way to demagnetise a bar magnet is to

The angle between the geographic meridian and the magnetic meridian is called the

Which of these is a magnetic material?

Outside a bar magnet, magnetic field lines run from

The angle between the magnetic meridian and the geographic meridian is called the

A magnet is best demagnetised by

Soft iron is used as the core of an electromagnet because it

Which group of metals is strongly magnetic?

The angle between the magnetic and geographic meridians is the

Soft iron keepers are placed across the poles of stored bar magnets to

Soft iron keepers are placed across the poles of stored magnets in order to

A neutral point in a magnetic field is a point where

Iron filings sprinkled around a bar magnet gather most thickly at

Magnetic shielding of a sensitive instrument is done by surrounding it with

Which of the following quantities is measured in kg/m³?

The dimensions of momentum are

Which of the following is a fundamental quantity?

The watt expressed in SI base units is