2018 NECO GCE Physics Practical Questions & Answers,2018 NECO GCE Physics Practical Questions & Answers,2018 NECO GCE Physics Practical Questions & Answers,2018 NECO GCE Physics Practical Questions & Answers.
(3a)
In a tabular form
Under S/N
1, 2, 3, 4, 5, 6
Under R(ohms)
5.0, 10.0, 15.0, 20.0, 25.0, 30.0
Under X(cm)
33.00, 49.50, 60.00, 67.00, 71.00, 74.50
Under K = 100 -X(cm)
67.00, 50.50, 40.00, 33.00, 29.00, 25.50
Under Y = x/k
0.4925, 0.9802, 1.5000, 2.0303, 2.4483, 2.9216
(3avi)
DRAW THE GRAPH
(3avii)
Slope
R2 - R1/y2 -y1
= 20 - 5/2.0 - 0.5
= 15/1.5
=10.0 ohms
(3aviii)
(i) I must use a freshly charged accumulator.
(ii) I must take proper readings through my resistance box and potentiometer to avoid error due to parallax
(3bi)
Lost volt is the voltage lost due to the internal resistance of a cell. It is measured in volts.
(3bii)
E = I(R+r)
4 = I(2+0.5)
4 = 2.5I
I = 4/2.5
= 1.6A
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Title :
NECO GCE 2018 PHYSICS PRACTICAL EXPO (NOV/DEC) QUESTIONS/ANSWERS/RUNS/EXPO
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