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Difficulty: EasyElectricity and Magnetism

In basic direct-current circuits, various fundamental electrical quantities describe the flow and use of electric energy. Match each electrical quantity on the left with its correct physical definition and standard unit on the right.

  • VoltageThe electrical potential difference or push that drives charges through a circuit, measured in volts (V\text{V}).
  • CurrentThe rate at which electric charge flows through a conductor, measured in amperes (A\text{A}).
  • ResistanceThe opposition to the flow of electric current through a material, measured in ohms (Ω\Omega).
  • Electrical PowerThe rate at which electrical energy is transferred or consumed by a component, measured in watts (W\text{W}).

Answer

Voltage matches the electrical potential difference driving charge (volts); Current matches the rate of charge flow (amperes); Resistance matches the opposition to current flow (ohms); Electrical Power matches the rate of energy transfer (watts).
Each electrical quantity is correctly matched to its standard SI unit and underlying physical definition based on Ohm's law and electrical power principles.

Step-by-Step Solution

1
Identify the definitions and units for potential difference and charge flow.
Voltage provides the electrical push measured in volts (V\text{V}), while Current represents the flow rate of charge measured in amperes (A\text{A}).
These are the two driving and kinematic parameters of an active circuit.
2
Identify the definitions and units for circuit opposition and energy rate.
Resistance opposes current flow and is measured in ohms (Ω\Omega), while Electrical Power is the energy conversion rate measured in watts (W\text{W}).
These relate the load characteristics and total work rate in the circuit.

Key Concept

Fundamental electrical properties, units of measurement, and definitions in direct-current circuits.
Estimated Time:45s
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Topics

Electricity and Magnetism

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