Understanding Electrical Circuit Symbols

What is the symbol for a resistor in an electrical circuit diagram?

• A zigzag line

• A straight line

• A circle

• A triangle

Which symbol represents a battery in a circuit diagram?

• Two parallel lines of different lengths

• A circle with a cross inside

• A rectangle

• A triangle

In a series circuit, how is the total resistance calculated?

• By adding the reciprocals of each resistance

• By multiplying all resistances

• By adding all resistances

• By subtracting the smallest resistance from the largest

What is the symbol for a capacitor in an electrical circuit diagram?

• Two parallel lines

• A zigzag line

• A circle

• A triangle

Which of the following is true for a parallel circuit?

• The current is the same through all components

• The voltage is the same across all components

• The total resistance is the sum of individual resistances

• The power is the same across all components

Identify the symbol for an inductor in a circuit diagram.

• A zigzag line

• A series of loops or coils

• A circle with a cross inside

• A triangle

What is the unit of resistance?

• Ampere

• Volt

• Ohm

• Watt

In a parallel circuit, how is the total resistance calculated?

• By adding all resistances

• By multiplying all resistances

• By adding the reciprocals of each resistance and taking the reciprocal of the sum

• By subtracting the smallest resistance from the largest

Which component is represented by a circle with a cross inside in a circuit diagram?

• Resistor

• Battery

• Light bulb

• Switch

What is the symbol for a diode in an electrical circuit diagram?

• A triangle pointing to a line

• A zigzag line

• A circle

• Two parallel lines