# WAEC 2021 Physics (Practical) Expo Questions And Answers Expo Runs

WAEC 2021 Physics Practical Expo, West Africa Examination Council WAEC 2021 Physics (Practical) Expo Questions And Answers Expo Runs Now Posted for free.

This is to Inform the WAEC 2021 Candidates, that the Eduwapaz™ is ready to Provide the Solutions for the WAEC 2021 Physics Practical Expo Answers (May/June).

Here Is The Verified Waec 2021/2022 Physics Practical Expo Questions And Answers – May/June Expo Runz Eduwapaz.com

## ALWAYS SUBSCRIBE IF YOU DONT WANT DELAY OR LATE ANSWERS.. WE FOCUS MORE ON SUBSCRIBERS BECAUSE THEY ARE THE VERY SERIOUS One.

(1aviii)
In a tabular form
Under y(cm)
20.0, 30.0, 40.0, 50.0, 60.0

Under t(s)
36.61, 33.66, 31.32, 28.62, 25.93

Under T = t/20(s)
1.8305, 1.6830, 1.5660, 1.4310, 1.2965

Under T²(s²)
3.3507, 2.8325, 2.4524, 2.0478, 1.6809

(1ax)
Slope s = ΔT²/Δy
S = 4 – 2.5/0 – 39
S = 1.5/-39
S = -0.0385

Intercept, C = 4.0

(1axi)
SR = c
R = c/s = 4/-0.0385 = -103.9

(1axii)
(i) I ensured that the retort stand was well clamped.
(ii) I avoided error due to parallax when reading the metre rule.

(1 GRAPH)

(1bi)
Draw the diagram
(α) K.E is maximum
(β) acceleration is maximum

(1bii)
Period, T = 2π√m/k
Given : weight, W = 120N
Mass = w/g = 120/10 = 12
T = 45
π = 3.142
4 = 2(3.142)√12/k
0.6365 = √12/k
Square both sides
0.405 = 12
K = 12/0.405 = 29.6

(3ai)
E.m.f, E = 3.00v
(3avii)
In a tabular form
Under R(ohms)
2.0, 5.0, 10.0, 12.0, 15.0, 20.0

Under V(v)
0.86, 0.62, 0.43, 0.38, 0.32, 0.25

Under V-¹(v-¹)
1.1628, 1.6129, 2.3256, 2.6316, 3.1250, 4.0000

(3aix)
Slope s = ΔR/Δv-¹
=17.5 – 4.25/3.5 – 1.5
=13.25/2
=6.625

Intercept, C = -5.75

(3ax)
S = Roα
6.625 = 0.85(α)
α = 6.625/0.85 = 7.79

C = -(Ro + β)
= -5.75 = -(0.85 + β)
β = 5.75 – 0.85
β = 4.9

(3axi)
(i) I ensured tight connections.
(ii) I avoided error due to parallax when reading the voltmeter.

(3bi)
Vab = 12 – 8 = 4v
Rab = 4×5/4+5 = 20/9ohms
Iab = Vab/Rab = 4/20/9 = 4 ×9/20 = 9/5
=1.8A

Power = I²ab Rab
=1.8² * 20/9
= 7.2watts

(3bii)
Current in line = power/voltage = 3600/240
=15A
Circuit breaker remain closed because current in line is less than 20A

(3)
(3x)
(i) I avoided parallax error when taking readings from the voltmeter
(ii) I ensured that the key was opened when reading is not been taking

## How To Get WAEC 2021 Physics Practical Expo

#### Direct SMS: N700 MTN CARD

(In This Package, We’ll Send Answers To Your Phone Inbox Via Text Msg/SMS Before Exam Starts)

(In This Package We’ll Send You The Password And Link 1! 6Hr before Exam And Answers Will Show B4 Exam Starts Sometimes Answers Comes 6 Hours.)

#### Whatsapp: N400 MTN CARD

(In This Package, We Will Send Questions And Answers Send To You On Whatsapp Before Exam Commencement Sometimes Answers Comes 6 Hours.)

## How To Make Payment

– Send
(i) Subject Name (e.g Physics Practical)
(ii) MTN Recharge Card Pin(s)
(iii) SMS or WhatsApp or Password
08148838401

For Example:

Physics Practical, (8651234790862515) (MTN-700), Direct SMS, Charles