Understanding Electrical Components and Circuits

What is the unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

Which of the following is a type of resistor?

• Ceramic

• Carbon film

• Electrolytic

• Ferrite core

What is the formula for Ohm's Law?

Which of the following is a semiconductor component?

• Signal diode

• Air core inductor

• Power transformer

• Mains fuse

What is the primary function of a capacitor?

• To store electrical energy

• To increase current

• To decrease voltage

• To convert AC to DC

Which of the following is a type of primary cell?

• Nickel cadmium

• Zinc carbon

• Lead acid

• Nickel metal hydride

What is the purpose of a heat sink?

• To increase voltage

• To dissipate heat

• To store charge

• To amplify signals

Which of the following is a potential hazard when using soldering equipment?

• Risk of arcing

• Solder splash

• Circuit loading

• Fluid leakage

What is the function of a relay?

• To store energy

• To switch circuits

• To increase resistance

• To decrease capacitance

Which of the following is a type of transformer?

• Power

• Surface mount

• Variable

• Quick blow