Introduction to Electric Circuit Analysis

What is a circuit?

• 1. A circuit is a configuration of interconnected mechanical components that transfer rotational energy.

• 1. A circuit is a closed-loop system where only magnetic fields transfer energy.

• An electric circuit is an interconnection of electrical elements.

• 1. A circuit is an arrangement of electrical elements that function without requiring any voltage or current flow.

What is the unit for electrical potential?

• Ampere

• Volt

• Ohm

• 1. Coulomb

The direction of the current is the same as the direction of the electron.

• False

• True

What is the suitable definition for the electrical current?

• 1. the energy consumed by a resistor over time

• 1. the total amount of charge stored in a capacitor

• 1. the potential difference between two points in a circuit

• the time rate of change of electric charge

An alternating current (AC) is a ...

• current that varies sinusoidal with time.

• 1. current that only flows in one direction.

• 1. current that is generated by a constant voltage source.

• 1. current that remains constant with time.

Which statement about voltage is true?

• 1. Electric voltage is the amount of energy stored within a single point in a circuit.

• Electric voltage is always across the circuit element or between two points in a circuit.

• 1. Voltage can only exist in open circuits where no current flows.

• 1. Voltage is the same at all points in a circuit, regardless of the circuit's components.

Which statement is true for the circuit shown?

• Point a is at potential of 10 V higher than point b

• Point b is at potential of -10 V lower than point a

• Point a is at potential of -10 V lower than point b

• Point b is at potential of 10 V lower than point a

Which formula is correct to calculate power in a circuit?

• P = V+I

• P = VI

• P = Q/t

• P = J/C

Which of these components is categorized as an active element?

• Amplifier

• 1. Resistor

• 1. Inductor

• 1. Capacitor

As a unit charge moves from point A to point B, it loses electrical energy. Where does the energy go?

• 1. The energy is stored in the charge for future use on the circuit elements between A and B.

• 1. The energy disappears from the system completely on the circuit elements between A and B.

• The energy is converted into heat, light, or other forms of energy depending on the circuit elements between A and B.

• 1. The energy increases the charge's velocity as it moves on the circuit elements between A and B.