Electronics Quiz

How does a transformer work?

• By direct current transfer

• By changing voltage through electromagnetic induction

• By amplifying current

• By storing electrical energy

What is the unit for measuring electrical resistance?

• Amperes (A)

• Volts (V)

• Ohms (Ω)

• Farads (F)

The function of a capacitor is to:

• Control the flow of current in one direction

• Store electrical energy in an electric field

• Amplify a signal

• Generate light

Integrated circuits (ICs) contain:

• A single passive component

• Multiple electronic components on a single chip

• Only transistors

• Only resistors

What type of memory is volatile, meaning it loses data when power is lost?

• Read-Only Memory (ROM)

• Random-Access Memory (RAM)

• Flash memory

• Hard Disk Drive (HDD)

LEDs (Light Emitting Diodes) are used to:

• Reduce voltage

• Control the flow of current in one direction

• Store electrical energy

• Amplify current

What type of capacitor offers the highest capacitance in a small package?

• Electrolytic capacitor

• Ceramic capacitor

• Film capacitor

• Tantalum capacitor

A fuse is a safety device that:

• Controls the flow of current

• Melts if excessive current flows through it

• Amplifies signals

• Stores electrical energy

What annotation technique is used to identify components on a schematic or PCB layout?

• Color coding

• Reference designators

• Component values

• Manufacturer logos

Resistors are used for:

• Amplifying current

• Storing electrical energy

• Opposing the flow of current

• Emitting light