2024 WAEC Physics Practical Alt B Answers

Number 2

(2b)
(PICK TWO)
(i)
(I) magnetic method(electro magnetic induction)
(II) heat (thermo electric emission)
(III) chemical method

(2bii)
Ohm’s law states that “at constant temperature and other physical condition,the current flowing through a conductor (wire) is directly proportional to the potential difference across it”

Number 3

(3bi)
A couple, in the context of oscillatory motion, refers to a pair of forces that are equal in magnitude, opposite in direction, and act on opposite sides of a pivot or fulcrum, causing rotation or torsion.

(3bii)
(i)Screwdrivers: When you use a screwdriver to tighten or loosen a screw, you are applying a couple. The force you apply to the handle of the screwdriver is transmitted to the tip, causing the screw to rotate.
(ii)Steering wheels: When you turn a steering wheel, you are applying a couple. The force you apply to the wheel is transmitted to the axle, causing the wheels to turn and the vehicle to change direction.

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2024 WAEC Physics Practical Alt B Answers

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