Exercises that make the theory stick
Use the quizzes for instant correction, revisit the concepts behind wrong answers, and apply the calculators to check your working. Practice is deliberately short and repeatable.
Quizzes with explanations
Five quizzes, fifty questions, instant feedback and a full review.
Electrical Fundamentals Quiz
Check your grasp of voltage, current, resistance, power and the behaviour of series and parallel circuits with ten explained questions.
IntermediateElectrical Laws and Circuits Quiz
Practise Ohm’s law, Kirchhoff’s laws, series and parallel resistance, power and voltage dividers with ten explained questions.
BeginnerElectrical Components Quiz
Identify resistors, capacitors, diodes, relays, fuses and more, and check how each component behaves in a circuit with ten explained questions.
IntermediateAutomotive Electrical Quiz
Test your knowledge of batteries, charging, starting, fuses, relays and grounds in a 12 V vehicle electrical system with ten explained questions.
IntermediateElectrical Safety and Measurement Quiz
Check your understanding of safe measurement practice, meter modes, voltage drop, continuity limits and high-voltage boundaries with ten explained questions.
Practice by concept
Read the concept, work the example, then verify the arithmetic with a calculator.
Automotive Electrical System
A vehicle electrical system stores, generates and distributes 12 V or 24 V power. Learn the battery,...
Electrical ProtectionCircuit Breaker
A circuit breaker interrupts overcurrent and can be reset. Learn thermal-magnetic trips, curves, bre...
Electrical MeasurementsMultimeter
A multimeter measures voltage, current, resistance and more. Learn functions, ranges, burden voltage...
Electrical LawsOhm’s Law
Ohm’s law links voltage, current and resistance with V = I × R. Learn the formula triangle, the limi...
DC ElectricityParallel Circuits
In a parallel circuit, branches share the same voltage and currents add. Learn equivalent resistance...
Power & EnergyPower Factor
Power factor is the ratio of active power to apparent power. A low power factor means more current f...
DC ElectricitySeries Circuits
In a series circuit, components form a single path so the same current flows through each. Learn ser...
DC ElectricityVoltage Divider
A voltage divider uses two resistors to produce a fraction of the input voltage. Learn the formula,...
Courses with practical checkpoints
Electrical Fundamentals
Voltage, current, resistance and safe circuit thinking
Electrical Circuit Analysis
Series and parallel networks, Kirchhoff’s laws and Thevenin thinking
Electrical Components
Resistors, capacitors, inductors, diodes, transistors and relays
AC and DC Electricity
Direct current, alternating waveforms, reactance and three-phase power
Industrial Electricity
Distribution, motor control, protection and safe isolation
Automotive Electrical Systems
Battery, charging, cranking, wiring, grounds and lighting
Automotive Electronics
Sensors, ECUs, networks and diagnostic method
Electric Vehicle Fundamentals
High-voltage architecture, battery systems, charging and service safety