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Waec 2020/2021 physics  Practical questions and answers Expo Runz Answers click on the link below to view the answers



Please note: the physics practicals Questions and answers below are last year 2019 







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(1xii)

(i) I avoid parallax error in the metre rule and stop

(ii) I avoid conical oscillation

(3a)

(i) Emf , F=3.00v

Tabulate

R(π) : 2.0,5.0,10.0,12.0,15.0,20.0

V(v): 0.86,0.62,0.43,0.38,0.32,0.25

V^-1(v^-1): 1.1628,1.6129,2.3256,2.6316,3.1280,4

(3ix)

Slope (s) =ΔR/Δv^-1

= 17.5-4.25/3.5-1.5

= 13.25/2

= 6.625

Intercept (c) = -5.75

(3x)

S=Ro alpha (please use the alpha sign)

6.625=0.85(alpha)

alpha = 6.625/0.85=7.79

C= -(Ro +β)

-5.75= - (0.85+β)

β= 5.75-0.85

β=4.9

(3)

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(3x)

(i) I avoided parallax error when taking readings from the

voltmeter

(ii) I ensured that the key was opened when reading is not

been taking

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Waec 2019 physics Practical Expo Runz Answers click on the link below to view the answers  

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