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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
What is the unit of electrical energy commonly used for billing purposes in homes and industries?
Joule (J).
Volt-Ampere (VA).
Kilowatt-hour (kWh).
Watt (W).
According to Ohm's Law, if the voltage across a resistor is doubled, the current flowing through it will:
Remain the same.
Be quartered.
Be doubled.
Be halved.
Two light bulbs are connected in parallel to a power source. Bulb A has a resistance of 100Ω and Bulb B has a resistance of 50Ω. Which bulb will be brighter?
Bulb B will be brighter.
Bulb A will be brighter.
The brightness cannot be determined without the voltage.
Both bulbs will have the same brightness.
How is an ammeter always connected in a circuit to measure current?
In parallel and series.
In series.
None is correct.
In parallel.
Which of the following statements about an electric current is correct?
It's the flow of protons.
It's the flow of electrons.
It's the flow of neutrons.
It's the flow of positive ions.
