DC Basics Refresher

What law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points?

• Kirchhoff's Law

• Ohm's Law

• Faraday's Law

• Coulomb's Law

According to Kirchhoff's Law, the total current entering a junction in a circuit is equal to what?

• The total voltage across the junction

• The total resistance at the junction

• The total current leaving the junction

• The total power used by the junction

What is the primary function of a switch in a DC circuit?

• To store electrical energy

• To limit the flow of current

• To allow or prevent the flow of current

• To convert AC to DC

How is voltage defined in an electrical circuit?

• The flow of electric charge

• The resistance to electric charge

• The electrical potential difference between two points

• The capacity to store electrical energy

What is the unit of electric current?

• Ohms (Ω)

• Volts (V)

• Watts (W)

• Amperes (A)

What electronic component is known for storing electrical energy in an electric field?

• Resistor

• Capacitor

• Inductor

• Diode

What is the role of a resistor in a circuit?

• To store electrical energy

• To allow current to flow in one direction only

• To limit the flow of current

• To convert AC to DC

Which component is a semiconductor device that allows current to flow in only one direction?

• Transistor

• Capacitor

• Resistor

• Diode

How do you calculate voltage in a circuit using Ohm's Law?

• V = I / R

• V = I + R

• V = I * R

• V = R / I

What is the formula for calculating current in a circuit using Ohm's Law?

• I = V + R

• I = V / R

• I = R / V

• I = V * R