Understanding Circuits: Quiz on Basics

What is Ohm's Law?

In a series circuit, if one component fails, what happens to the entire circuit?

• The circuit continues to work

• The circuit stops working

• The circuit becomes a parallel circuit

• The circuit's resistance decreases

Which of the following is a characteristic of a parallel circuit?

• The total resistance is the sum of individual resistances

• The voltage across each component is the same

• The current is the same through each component

• The total current is the sum of the currents through each component

What symbol is used to represent a resistor in a circuit diagram?

• A zigzag line

• A straight line

• A circle

• A triangle

If the resistance in a series circuit is increased, what happens to the total current?

• It increases

• It decreases

• It remains the same

• It becomes zero

In a parallel circuit, if one branch is removed, what happens to the total resistance?

• It increases

• It decreases

• It remains the same

• It becomes zero

Which of the following is true for a series circuit?

• The voltage is the same across all components

• The current is the same through all components

• The power is the same across all components

• The resistance is the same across all components

What is the unit of resistance?

• Ampere

• Volt

• Ohm

• Watt