8 Questions
Electric charge is a fundamental property of ______, can be positive or negative
matter
The flow of electric charge is measured in ______
Amperes
The ______ circuit is a type of circuit where components are connected one after another
series
Materials that allow electric current to flow are called ______
conductors
The flow of electric current through the body is known as ______
electrical shock
A device that measures voltage, current, and resistance is called a ______
multimeter
The unit of measurement for electric potential is ______
Volts
The opposition to electric current is measured in ______
Ohms
Study Notes
Basics of Electricity
- Electric Charge: a fundamental property of matter, can be positive or negative
- Electric Current: flow of electric charge, measured in Amperes (A)
- Electric Potential: potential energy per unit charge, measured in Volts (V)
- Resistance: opposition to electric current, measured in Ohms (Ω)
- Power: rate of energy transfer, measured in Watts (W)
Electric Circuits
- Series Circuit: components connected one after another, current flows through each component
- Parallel Circuit: components connected between same two points, current divides between components
- Short Circuit: unintended flow of electric current, can cause damage or fire
Electric Conductors and Insulators
- Conductors: materials that allow electric current to flow, e.g. copper, gold, aluminum
- Insulators: materials that resist electric current, e.g. rubber, glass, wood
Electric Safety
- Electrical Shock: flow of electric current through the body, can be fatal
- Grounding: connecting an electric circuit to the earth, prevents shock
- Fuses and Circuit Breakers: protect against excessive current, prevent overheating and fires
Electric Measurements
- Multimeter: device that measures voltage, current, and resistance
- Ammeter: measures electric current
- Voltmeter: measures electric potential
- Ohmmeter: measures resistance
Test your knowledge of electricity fundamentals, including electric charge, current, potential, resistance, power, circuits, conductors, insulators, safety, and measurements.
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