3.6-3.10 Revision Quiz

What is required to complete a basic electric circuit?

• Generator, Load, Switch, and Connection wire
• Load and Switch
• Generator and Resistor

According to Ohm's Law, what is the relationship between voltage, current, and resistance?

• V = I² × R
• V = I × R
• V = I / R

What happens to the current in a circuit if the total resistance is doubled while the voltage remains constant?

• Current is halved
• Current remains the same
• Current doubles

When voltage sources are connected in series, how is the total voltage calculated?

• By multiplying the voltages
• By adding the voltages, considering the polarity
• By subtracting the voltages

Kirchhoff's Voltage Law states that in a closed loop, the sum of all voltages is:

• Equal to zero
• Equal to the highest voltage in the loop
• Equal to the algebraic sum of the voltage drops

In a voltage divider circuit, the voltage across any resistor is proportional to which of the following?

• The total current in the circuit
• The value of the resistor relative to the total resistance
• The voltage applied by the power source

What is the rule for determining whether a voltage is positive or negative in a voltage divider?

• Current direction relative to reference point
• Voltage source polarity
• Size of the resistor used

What is the primary difference between a parallel circuit and a series circuit?

• Series circuits have multiple branches
• Parallel circuits have more than one path for current flow
• Series circuits divide the current at each branch

According to Kirchhoff's Current Law, the sum of the currents entering a node is equal to:

• The total current flowing out of the node
• The current through the largest branch
• The voltage across the node

What is the significance of internal resistance in a power supply?

• It allows for voltage increase in the generator
• It causes a voltage drop when the generator supplies power
• It increases current flow to match the impedance of the load