WAEC Physics Practical Questions and Answers 2022. We will be updating you on free Expo Alternative B WAEC Physics Answers (Expo) for West African Examinations Council. WAEC Physics Practical Questions For you to have good WAEC result in Physics as well as repeated questions for free in this post. You will also understand how WAEC Physics practical questions are set and how to answer them. The West African Examinations Council is an examination board established by law to determine the examinations required in the public interest in the English-speaking West African countries, to conduct the examinations and to award certificates comparable to those of equivalent examining authorities internationally
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WAEC Physics Practical Questions and Answers 2022
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WAEC Physics Practical Alternative B Answers
Note: G=50.0cm Y=30.0cm
(i) I ensured that the meter rule balances horizontally before readings are taken in order to avoid experimental error.
(ii) I ensured that parallax error was avoided when taking the readings on The meter rule by viewing its calibration vertically.
(1bi) Moment of a force can be defined as the product of the force and its perpendicular distance from its point of action.
Moment of a force = force * Perpendicular distance of its line of action from the point
Moment = F * L
The S.I unit is Newton-meter(Nm).
It is a vector quantity
From the principle of moment:
Sum of clockwise moment = Sum of anti-clockwise moment
60 * x=m * y
60 * 25 = m * 30
Divide both sides by 30
60 * 25/30 = m *30/30
m=60 * 25/30
m=2 * 25
R(ohms) | I(A) | V(v)
1.0 0.40 0.65
2.0 0.35 0.58
4.0 0.28 0.50
6.0 0.22 0.45
8.0 0.18 0.40
(i) I avoided error due to parallax when reading the ammeter and voltmeter.
(ii) I ensured tight connections.
(Pick any 2)
(i) connecting cells in parallel adds the current capacities together.
(ii) connecting cells in parallel provides alternative Pathways for Current flows.
(iii) When cells are connected in parallel the Total voltage provided do not change
(Pick any 2)
(iii) Rated Power Dissipation.
(iv) Package and mounting.
(iv) Voltage rating.
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