2024 WAEC ENGLISH: 2024 NECO PHYSICS PRACTICAL ANSWERS (9917)
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Welcome to official 2024 English WAEC answer page. We provide 2024 English WAEC Questions and Answers on Essay, Theory, OBJ midnight before the exam, this is verified & correct WAEC Eng Expo. WAEC English Questions and Answers 2024. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2024 NECO PHYSICS PRACTICAL ANSWERS. 2024 WAEC EXAM English Questions and Answers
PHYSICS PRACTICAL SOLUTIONS NO 1 (TRACING)
ATTACH THIS TO YOUR ANSWER SCRIPT.
(1a)
Tabulate:
S/N: 1|2|3|4|5|
M|g: 40.0|35.00|30.00|25.00|20.00|
θ°: 41.80|35.70|30.00|24.60|19.47|
Ο=(90-θ°): 48.20|54.30|60.00|65.40|70.53|
CosΟ; 0.6665|0.5835|0.5000|0.4163|0.3333|
(1ax)
Graph [https://i.imgur.com/0tPTIDt.jpg]
(1axi)
Slope , S=Δm|g/ΔCosΟ
=(40-20)g/0.6665-0.3333
S= 20g/0.3332=60.024g
(1axii)
K=s/2 =60.024g/g= 30.012g
(1axiii)
Precautions:
(i) I avoided error due to parallax when reading from the protector
(ii) I ensured that the force board is firmly and correctly clamped to the retort stand
(1bi)
(i) The have the same magnitude/size
(ii) They can be obtained/calculated by the same means
(1bii)
T²= 9²+12²
T= √81+144
T= √225
T= 15N
(1b)
======================
(3a)
Tabulate:
S/N: 1|2|3|4|5|
R/Ω: 2.00|4.00|6.00|8.00|10.00|
L/cm: 50.00|66.70|75.00|80.00|83.30|
B/Ω^-¹: 0.500|0.250|0.167|0.125|0.100|
Δ/cm: 1.000|0.499|0.333|0.250|0.200|
(3aviii)
Graph [https://i.imgur.com/Q3ZR3bm.jpg]
(3aix)
Slope ,S=ΔB/Ω^-¹/ΔΔ/cm =0.5-0.1/1.0-0.2=0.4/0.8=0.5
Slope =0.5Ω^-¹/cm
(3ax)
K=S^-¹= 1/5=1/0.5Ω^-¹/cm =2Ωcm
(3axi)
Precautions:
(i) I avoided error due to parallax when reading from the potentiometer
(ii) I ensured that the wire are tightly connected.
(3bi)
(i) potentiometer give exact value of potential difference while voltmeter draws apart of the current
(ii) potentiometer can be used for measuring the internal resistance of a cell which cannot be done with voltmeter
(3bii)
x/R= c/100-c
x/R= 20-0/100-20
x/20= 20/80
x= 20*20/80
x= 400/80
x= 5Ω
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