# NECO GCE Physics Practical Questions and Answers – 2019 NECO GCE Expo

National Examination Council, NECO GCE Physics Practical Questions and Answers for 2019 NECO GCE Examination is now available, subscribe now and get the questions and already solved answers by Examrelief. # 👑 2019 NECO GCE PHYSICS PRACTICAL ANSWERS👑

(1ai -1aiv)
S/N|M(g)|Real values of b(cm)|Converted values of b(cm)| Real Value of d(cm)| Converted values of d(cm)| N = b/d
1 |20 |5.30|26.50|12.9|64.5|0.41|
2 |40 |8.0 |40.0 |10 |50.0|0.80|
3 |60 |9.9 |49.5 |8.3|41.5|1.20|
4 |80 |11.0|55.0 |7.0|35.0|1.50|
5 |100|12.1|60.5 |6.0|30.0|2.0|

YOU MAY ALSO LIKE:  NECO Data Processing Questions and Answers For 2018

(1avi)
Slope = Y2-Y1/X2-X1
=70-20/1.4-0.4
= 50/1
=50g

(1avi)
(i) I avoid error due to parallel when taking all my reading
(ii) I made sure that the meter rule balanced horizontally before taking my reading

(1bi)
(i) The total upward force must balance the downward.
(ii) The algebraic sum of all forces act on the body must be equal to zero.

(1bii)
If sum of moments of all forces must be zero
.:. 20g x 45cm = 100g x Xcm
X = 20g c 45cm / 100g
= (900/100)
= 9cm   ===============================

(3ai -3aiv)
S/N|R(ohms)|V(v)|I(A)|1/v(A/v)|R-¹(ohm-¹)|
1 | 1.0|1.21|1.80|1.49|1.00
2 | 2.0|1.50|1.50|1.00|0.50
3 | 3.0|1.64|1.36|0.83|0.33
4 | 4.0|1.72|1.29|0.75|0.25
5 | 5.0|1.76|1.23|0.70|0.20

(3av)
PLOT THE GRAPH

(3avi)
Slope = ΔA/V / ΔR-¹
= 1.28 – 0.80/ 0.80 – 0.30
= 0.48/0.50
= 0.96

YOU MAY ALSO LIKE:  2017 NECO GCE Physical Education OBJ & Theory Answers/Expo/Dubs/Runz

Intercept (c) = 0.50

(3avii)
(i) I would ensure I made tight connection before taking my reading.
(ii) I would ensure I noted zero error on the voltmeter and Ammeter

(3bi)
Potential difference is the work done in moving a unit charge from a point in electric field to another. It has the unit of Volt.
V = work done/charge

(3bii)
r = 0.5ohms
I = 1.2A
R = ?
E = 3v
E = I(R+r)
E = IR + Ir
E – Ir = IR
R = E – Ir/I
= 3 – 1.2 × 0.5/1 .2
= 3 – 0.6/1.2
R = 2.4/1.2
R = 2 ohms   =====COMPLETED======