Basic Electronics Quiz

What does LED stand for?

• Light Emitting Device

• Light Emitting Diode

• Low Energy Diode

• Light Energy Display

Which unit is used to measure resistance?

• Ampere

• Volt

• Ohm

• Watt

What is the function of a resistor in a circuit?

• Store charge

• Emit light

• Limit current flow

• Increase voltage

Which unit is used to measure electric current?

• Joule

• Ampere

• Ohm

• Watt

Which unit is used to measure voltage?

• Coulomb

• Watt

• Volt

• Ohm

What happens when too much current flows through an LED without a resistor?

• LED glows brighter forever

• LED gets damaged

• LED works as a battery

• Nothing changes

The relationship between Voltage (V), Current (I), and Resistance (R) is given by:

• V = I × R

• R = V × I

• I = V × R

• V = R/I

If a circuit has a 10 V battery and a 5 Ω resistor, what is the current?

• 0.5 A

• 2 A

• 5 A

• 50 A

What component is required with an LED to prevent it from burning out?

• Capacitor

• Switch

• Resistor

• Diode

In a series circuit, the current flowing through each resistor is:

• Different

• Zero

• Same

• Doubled