What does the source provide to the electrical circuit?

What does the source provide to the electrical circuit?

• A. Light and Sound
• B. Volts and Current
• C. Resistance and Reactance
• D. Capacitance and Inductance

Answer: (B)

Electrical sources supply energy to a circuit by establishing a potential difference that drives current. The voltage, measured in volts, creates the pushing force for charges to move, and the current, measured in amperes, is the flow that results. The actual amount of current depends on the circuit’s impedance, per Ohm’s law (V = IR). Light and sound are outputs that can result from the circuit’s operation, but they aren’t what the source provides. Likewise, resistance, reactance, capacitance, and inductance are properties of components that affect how the current flows, not the energy the source itself supplies. So the source provides volts and current.

Electrical sources supply energy to a circuit by establishing a potential difference that drives current. The voltage, measured in volts, creates the pushing force for charges to move, and the current, measured in amperes, is the flow that results. The actual amount of current depends on the circuit’s impedance, per Ohm’s law (V = IR). Light and sound are outputs that can result from the circuit’s operation, but they aren’t what the source provides. Likewise, resistance, reactance, capacitance, and inductance are properties of components that affect how the current flows, not the energy the source itself supplies. So the source provides volts and current.