Physics Past Questions | JAMB, WAEC, NECO and Post UTME Past Questions

Options

A) S and N

B) N and N

C) S and S

D) N and S

Options

A) reduced self-demagnetization

B) cancel the effect of the earth's magnetic field

C) protect the magnet from stray electric field

D) increase the strangth of the magnets

Options

A) \(5.0 \times 10^{-5} \mathrm{N}\)

B) \(5.0 \times 10^{-4} \mathrm{N}\)

C) \(5.0 \times 10^5 \mathrm{N}\)

D) \(5.0 \times 10^6 \mathrm{N}\)

Options

A) steel is more magnetized than soft iron

B) permanent magnets are usually made of steel

C) soft iron is more readily magnetized than steel

D) soft iron more readily loses its magnetism than steel

Options

A) magnitude of the current passing through the wire

B) material of the core of the magnet

C) material of the coil

D) direction of current in the wire

Options

A) 1

B) 2

C) 3

D) 5

Options

A) radioactivity

B) nuclear fusion

C) nuclear fission

D) chain reaction

Options

A) number of holes are equal to the number of electrons

B) electrical resistivity increases

C) electrons are the majority charge carriers

D) holes are the majority charge carriers

Options

A) Δx . Δp = h

B) Δx . Δp ≤ h

C) Δx . Δp ≥h

D) Δx . Δp > h

Options

A) 4.9 × 10^-9N

B) 1.3 × 10^-6N

C) 6.6 × 10^-8N

D) 6.6 × 10^-6N

E) 2.6 × 10^-9N