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WorksheetsRain Alarm Circuit Quiz
Total questions: 5
Worksheet time: 3mins
What is the main purpose of a rain alarm circuit?
To detect smoke
To detect rainwater and trigger an alert
To measure temperature
To generate electricity
What happens when water touches the rain sensor in the circuit?
The resistance increases
The circuit remains off
The transistor turns on, activating the buzzer
The circuit becomes an open circuit
What happens when the zinc and copper electrodes are placed inside the potato?
The potato glows
A chemical reaction generates electricity
The potato becomes hard
The potato starts melting
What type of transistor is commonly used in a rain alarm circuit?
MOSFET
PNP Transistor
NPN Transistor
SCR
What is the function of a resistor in the rain alarm circuit?
To store electrical charge
To regulate current flow and protect components
To amplify the signal
To detect water levels
