Following recent reviews, it has been found out that the weaknesses of candidates in WAEC Physics questions included lack of understanding of the fundamentals of the course, inability to take precise measurement to required accuracy, inability to plot graphs correctly and disregard of instruction, which makes them loose precious marks.

We will be sampling physics questions for candidates that will participate in the SSCE examination.

1. (a) State Faraday’s second law of electrolysis.
(b) An electric charge of 9.6 x 104 C liberates 1 mole of substance containing 6.0 x 1023 atoms. Determine the value of the electronic charge.
ANS: (a) If the same quantity of electricity is passed through different voltameters/electrolytes connected in series the masses of the substances liberated/deposited during electrolysis is (directly) proportional to their chemical equivalents.
(b) Let e represent the electronic charge.
e = Faraday’s constant
Avogadro’s number
= 9.6 x 104
6. 0. x 1023
= 1.60 x 10-19C

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