Physics 2016 WAEC Past Questions

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A 10\(\mu\)C charge moves with a velocity of 1.0 x 10⁵ ms^-1 at right angle to a uniform magnetic field of flux density 5.0 x 10^-4T. Calculate the force on the charge

A. 5.0 x 10^-5N
B. 5.0 x 10^-4N
C. 5.0 x 10⁵N
D. 5.0 x 10⁶N

View Answer & Discuss (2) WAEC 2016

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

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

View Answer & Discuss (4) WAEC 2016

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

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

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

A. 1
B. 2
C. 3
D. 5

View Answer & Discuss (1) WAEC 2016

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

A. radioactivity
B. nuclear fusion
C. nuclear fission
D. chain reaction

View Answer & Discuss (4) WAEC 2016

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