2022 NECO GCE PHYSICS PRACTICAL Questions & Answers: 2021 NECO GCE PHYSICS PRACTICAL ANSWERS Night before Exam

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2022 Physics Answer NO.: 0


(1aix)
Tabulate
S/N; |1|2|3|4|5|

Q(g); |30.0|40.0|50.0|60.0|70.0|

Δ(cm);82 00|74.00|69.00|66 00|63.50|

X=Δ; - E; |32.50|24.50|19.50|16 50|14.00|

X^-¹(cm^-¹); |00.31|00.41|00.51|00.61|00.71

(1ax)


(1axi)
ΔQ/Δx^-¹
=50.9-30.0/0.06-0.031
Slope=20.9/0.029
=720.6≅ 721gcm

(1axii)
K=720.6/50
K=14.41gcm

(1axi)
(i)I would avoid draught
(ii)I would avoid parallax error in the reading meter rule

(1bi)
Moment of a force about a point is the product of force and perpendicular distance from the turning point. Moment = F x D The S.I unit is Nm.

(1bii)
(i)The total resultant force must be zero
(ii)The total force in one direction are equal to the total force in opposite direction. That is the total upward force is equal total downward force.


2022 NECO GCE PHYSICS PRACTICAL ANSWERS

2022 Physics Answer NO.: 2


(3a)
Tabulate;
S/N; 1,2,3,4,5,6

R(Ω); |1.00|2.00|3.00|4.00|5.00|6.00|

I(A);0.88|0.70|0.55|0.46|0.41|0.36|

I^-¹(A^-¹); |1.1364|1.4706|1.8182|2.173|2.4390|2.7778|

(3av)
Graph


(3avi)
Slop;
ΔR/Ω/ΔI^¹/A^-¹
=(6.00-1.00)/Ω/(2.7778-1.1364)A^-¹
=5.00/Ω/1.6414/A^-¹
=3.046ΩA

Intercept;
The interception is 0.7 ohm's.

(3avii)
Precautions
(i)I will ensure Tight connections/clean terminals
(ii)I will ensure Key removed when reading are not being taken

(3bi)
(i) it give high current capacity
(ii) it's internal resistance is very low.

(3bii)
1/R=1/R¹+1/R²
1/R=1/3+1/2
1/R=5/6
R=6/5Ω or 1/¹/⁵ ohms


2022 NECO GCE PHYSICS PRACTICAL ANSWERS
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2021 EXAM DATES

NECO: 5th July - 16th August

WAEC: 16th August - 30th Sept



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QUESTIONS AND ANSWERS FOR 2022 NECO GCE PHYSICS PRACTICAL ANSWERS


EXAM DETAILS:


PIN: 8122
Subject: Physics
Exam:
Year: 2021
Updated At: July 27th 2021, (06:07:18)

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