Electricity and Magnetism
No description yet. This curated deck is ready for daily study.
Card preview (24)
Define voltage.
The electric potential difference between two points in a circuit.
What is Ohm’s Law?
The relationship between voltage, current, and resistance: V = I × R.
Fill in the blank: Resistance is measured in _______.
Ohms
True or false: Current is the flow of electric charge.
TRUE
What unit measures current?
Amperes (A)
Define circuit.
A closed loop that allows current to flow.
What is the formula to find voltage?
Voltage (V) = Current (I) × Resistance (R).
Fill in the blank: Power is calculated as _______ in a circuit.
Voltage × Current
True or false: Magnetism is caused by moving electric charges.
TRUE
What is a magnetic field?
A region around a magnet where magnetic forces can be detected.
Define series circuit.
A circuit where components are connected end-to-end, sharing the same current.
What is a parallel circuit?
A circuit where components are connected across common points, allowing multiple paths for current.
Fill in the blank: In a series circuit, total resistance is _______.
The sum of individual resistances.
True or false: Voltage is the same across all components in a series circuit.
FALSE
What does a voltmeter measure?
The voltage across two points in a circuit.
Define electromagnetism.
The interaction between electric currents and magnetic fields.
Fill in the blank: Inductance is the property of a conductor to oppose changes in _______.
Current
Define short circuit.
An unintended path allowing current to flow with little or no resistance.
What is a circuit breaker?
A safety device that interrupts current flow in an overloaded circuit.
Fill in the blank: Electrons are negatively charged particles that flow in a circuit from _______.
Negative to positive
Define conductors.
Materials that allow electric charge to flow easily, like metals.
What are insulators?
Materials that resist the flow of electric charge, like rubber or glass.
Fill in the blank: Current is measured in _______.
Amperes (A)
True or false: Voltage can exist without current.
TRUE