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Waec 2018 Physics Practical Answers Expo/Runs Free

Last modified about 3 weeks ago by . Posted in Waec |

How to Get 2018 WAEC Physics Practical Expo/Runs Answers

2018 WAEC Physics Practical Answers
1)
Tabulate
S/n 1,2,3,4,5
L(cm) 90.00,80.00,70.00,60.00,50.00
T(s) 38.30,35.40,33.40,29.60,27.50
T=t/20(s) 1.92,1.77,1.67,1.48,1.38
sqrL(cm^1/2) 9.49,8.94,8.37,7.75,7.07

1vii)
CLICK HERE FOR THE GRAPH IMAGE

1ix)
slope (s) = D vertical/D horizontal
= 1.90-155/9.49-775
=0.35/1.75
s=0.201

1x)
g=4^2/s^2
=4*(3.142)^2/(0.201)^2
=977.4cm1s^2

1xii)
-precautions-
Take Any Two
i)I avoided conical oscillation
ii)I avoided drought
iii)I avoided parallax error in taking reading from the metre rule
iv)I avoided zero error in taking reading from the stop watch


3)
Tabulate
s/n 1,2,3,4,5
D(cm) 25,35,50,65,80
I(A) 1.99,1.75,1.55,1.44,1.36
I^(A^-1) 0.530,0.571,0.645,0.694,0.735
Lo(j^) -0.2984,-0.2434,-0.1904,-0.1586,-0.1337

3iii)
CLICK HERE FOR THE GRAPH IMAGE

3viiii)
slope Dvertical/Dhorizontal
=1.41-1.00/80-25
=0.4/55
S=0.00727

3x)
from the graph C=32cm

3xi)
K=c/2=33/2=16cm

3xii)
-precautions-
take any two
i)I removed key when reading is not taking
ii)I ensured tight connections at the terminals
iii)I avoided parallax error when taking reading from the ammeter.

3bii)
i)length – longer wires have greater resistance.
ii)thickness – smaller diameter wires have greater resistance.


 

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