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Exercise 1
GCE O-Level 2018.
GCE O-Level 2019.
GCE O-Level 2020.
GCE O-Level 2021.
GCE O-level 2023
GCE O-level 2024
Select Lessons (41)
Dynamics: Newton’s Laws of Motion
ELECTRICITY : ELECTROMAGNETISM - Alternating Current
ELECTRICITY : ELECTROMAGNETISM - Current in a Magnetic Field
ELECTRICITY : ELECTROMAGNETISM - Electromagnetic Induction
ELECTRICITY : ELECTROMAGNETISM - Magnets
ELECTRICITY : Electric Current I
ELECTRICITY : Electrostatics
ELECTRICITY : MODERN PHYSICS - The Electron (Electronics)
ELECTRICITY : WAVES - Light
ELECTRICITY : WAVES - Vibrations and Sound
ELECTRICITY: Current
Energy: Application And Uses
Forces
HEAT : TEMPERATURE - Concept of Heat and Temperature
HEAT : TEMPERATURE - Heat Capacity
HEAT : TEMPERATURE - Heat Transfer
HEAT : TEMPERATURE - Thermometers
HEAT : TEMPERATURE - Thermometric Properties
Health Education
Linear Momentum
MECHANICS : ENERGY - Forms of Energy
MECHANICS : ENERGY - Machines
MECHANICS : ENERGY - Power
MECHANICS : ENERGY - Work
MECHANICS : FORCES - Moments
MECHANICS : FORCES - Newton’s laws of Motion
MECHANICS : FORCES - Physical quantities
MECHANICS : FORCES - Types and characteristics of forces
MECHANICS : FORCES - Vectors and Scalars
MECHANICS : MOTION - Conservation of Linear Momentum
MECHANICS : MOTION - Linear Motion
MECHANICS : PROPERTIES OF MATTER - Density
MECHANICS : PROPERTIES OF MATTER - Hooke’s Law
MECHANICS : PROPERTIES OF MATTER - Pressure
MOTION
Matter: Its Properties & Transformation
PRESSURE
Radioactivity
WAVES: Electromagnetic
5/45 MCQs for:
ELECTRICITY : Electric Current I
An industrial machine operates at 400V and has a resistance of 200Ω. What is the power consumed by the machine?
2.0 kW.
800 kW.
800 W.
0.8 kW.
A resistor has a voltage of 12 V across it, and a current of 3 A flows through it. What is its resistance?
36 Ω.
0.25 Ω.
4 Ω.
9 Ω.
What is the SI unit of electric current?
Ohm.
Ampere.
Watt.
Volt.
What is the total resistance of two resistors with resistances R₁ and R₂ connected in parallel?
R₁ × R₂.
R₁ + R₂.
(R₁ + R₂) / (R₁ × R₂).
(R₁ × R₂) / (R₁ + R₂).
An incandescent light bulb produces light and heat. If it is rated at 60W, what does this rating represent?
The total electrical energy consumed by the bulb per second.
The total electrical energy converted to light per second.
The total heat energy dissipated by the bulb per second.
The voltage required for the bulb to operate.
