Electronics Project Quiz

What is the main purpose of the project described in the presentation?

• To build a light sensor

• To create a rain alarm using a transistor

• To design a temperature gauge

• To make a sound amplifier

Which component is NOT listed as required for this project?

• 3V LED

• Arduino board

• 9V Battery

• Buzzer

What does LED stand for?

• Light Emitting Device

• Liquid Electrical Diode

• Light Emitting Diode

• Low Energy Display

When electricity passes through an LED, what happens?

• It generates heat.

• It stores charge.

• It glows and gives off light.

• It amplifies sound.

Which leg of an LED is typically connected to the positive (+) terminal?

• Short leg

• Long leg

• Either leg

• It doesn't matter

What is a breadboard primarily used for?

• Permanent circuit connections

• Building and testing circuits without soldering

• Storing electronic components

• Measuring voltage

Can components be easily removed and re-inserted from a breadboard?

• No, once inserted, they are fixed.

• Yes, you can insert and remove parts easily – use it again and again!

• Only with special tools.

• Only certain types of components.

What is the steady voltage supplied by a 9-volt battery?

• 3 volts

• 5 volts

• 9 volts

• 12 volts

Is a 9-volt battery typically rechargeable?

• Yes

• No, it cannot be recharged — use it once and then replace it.

• Only partially

• Only specific types are rechargeable

Which terminal of a 9-volt battery is described as "round"?

• Negative (-)

• Positive (+)

• Ground

• Output