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

Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correct polarity at P and Q respectively

In storing magnets, keepers are used to

A \(10\mu \mathrm{C}\) charge moves with a velocity of \(1.0 \times 10^5 ms^{-1}\) at right angle to a uniform magnetic field of flux density \(5.0 \times 10^{-4}T.\) Calculate the force on the charge.

Which of the following statements is not correct about steel and soft iron?

What determines the polarity at the ends of an electromagnet? The

How many beta particle(s) are emitted in the radioactive decay of \(^{198}_{79} \mathrm{Au} \leftarrow ^{198}_{80} \mathrm{Hg}\)?

The phenomenon by which two light atomic nuclear combine to form a heavy nuclide with the release of energy is known as

In a p-type semiconductor, the

Let Δx be the uncertainty in the measurements of position and Δp the uncertainty in measurement of momentum. The uncertainty principle relation is given as

Two objects of masses 80kg and 50kg are separated by a distance of 0.2m. If the gravitational constant is 6.6 x 10^-11Nm kg, calculate the gravitational attraction between them.