What does the source provide to the circuit?

What does the source provide to the circuit?

• A. Resistance and impedance
• B. Volts and Current
• C. Capacitance and Inductance
• D. Power and Energy

Answer: (B)

A source in a circuit supplies the driving quantities that push and sustain current: voltage (the potential difference) and the resulting current. The voltage sets up the electrical push, and the current is the flow that results from that push through the circuit. The other options describe properties of components (resistance/impedance, capacitance/inductance) or derived measures (power and energy) that depend on voltage and current, rather than what the source directly provides. Since the source is what creates the driving force and the flow of charges, volts and current are the most fundamental things it supplies.

A source in a circuit supplies the driving quantities that push and sustain current: voltage (the potential difference) and the resulting current. The voltage sets up the electrical push, and the current is the flow that results from that push through the circuit. The other options describe properties of components (resistance/impedance, capacitance/inductance) or derived measures (power and energy) that depend on voltage and current, rather than what the source directly provides. Since the source is what creates the driving force and the flow of charges, volts and current are the most fundamental things it supplies.