[email protected]
+234 810851560408108515604

Notice
Our 2021 WAEC GCE Second Series Midnight Answers Subscription ends on Sun 7th Nov 2021. Note: we don't accept calls. Please, we beg you in the name of God, do all your daily subscriptions AT LEAST a day before the exam, we may not have time to attend to you for daily subscriptions on the exam day. This is examplaza.com, we source other websites.
ID 17

## Refresh this page in every 5 minutes starting from 3 hours to the exam  This is actually the 2018 NECO GCE ANSWERS. PHYSICS PRACTICAL Answers as questions sent to our subscribers on WHATSAPP, if you are looking for 2021 WAEC/NECO Answers midnight before the exam, try contacting us.

(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

======================================

(1aiv)

In a tabular form

Under S/N

1.0, 2.0, 3.0, 4.0, 5.0

Under y(g)

8.00, 10.00, 12.00, 14.00, 16.00

[Under yR(g)= 12.5*y]

100.00, 125.00, 150.00, 175.00, 200.00

Under X(cm)

17.60, 14.00, 11.60, 10.00, 8.70

Under XR(cm) = x * 2

35.00, 28.00, 23.20, 20.00, 17.40

Under L = 70/X

2.000, 2.500, 3.000, 3.500, 4.00

DRAW ANOTHER TABLE OF y(g) and L(cm)

Under y(g)

100.00

125.00

150.00

175.00

200.00

Under L(cm)

2.00

2.50

3.00

3.50

4.00

(1av)

DRAW THE GRAPH

(1avi)

Slope(s) = Dy/DL =

y2 - y1/L2 - L1

Where y2 = 175g, y1 = 100g

L2 = 3.5cm, L1 = 2.00cm

Slope(s) = 175 - 100/3.5 - 2

(1avii)

(i)I ensured mass did not touch/rest on the table

(ii)I avoided error due to parallax on metre rule

(iii)I noted zero error on metre rule

(iv)I avoided draught

(1bi)

The principal of moments state that if a body is in equilibrium,then the sum of the clockwise moments about any point on the body is equal to the sum of the anticlockwise moments about the same point

(1bii)

Draw the diagram

Taking moments about point B ie CWM = ACM

(FA*7) = 10*2

7F = 20

7F/7 = 20/7

F = 2.9N

= 75/1.5

= 50g/cm

======================================

2bi) I Rainbow

II Wave length

2v)

â€‹SLOPEâ€‹

Slope,s =y2-y1/x2-x1

=56.7-20/4-1

=36.7/3

=12.233

=12.23

2vi)U = 100/S = 100/12.23

= 8.176

=8.18

2vii)

â€“ I will avoid error due to parallax while reading the meter rule.

-I will ensure the mass is kept dried before weighing

How do I get 2021 NECO GCE ANSWERS. PHYSICS PRACTICAL BEFORE THE EXAM?
. You can get 2020/2021 Exam answers directly from examplaza.com, visit HERE NOW

## Portal: Related Posts

#### Answers 2020/2021: How do I get 2021 Waec Gce Health Science & Health Education answers hours/night before the exam? Examplaza sends answers night to the exam. Visit examplaza.com

2020/2021 WAEC/NECO Answers: 2021 Waec Gce Health Science & Health Education answers