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WorksheetsRound 3 : Voltage Dividers
Total questions: 10
Worksheet time: 6mins
What is this circuit called?
(a)
Calculate the value of R1.
6 Ω
12 Ω
4000 Ω
16000 Ω
Calculate the value of V2
6 V
3 V
9 V
12 V
The voltage across the 960 Ω resistor is (a) Ω
As temperature increases, the resistance of a thermistor _______
Increases
Decreases
Stays the same
To design a cold sensor, where should the thermistor be placed?
At the top of the voltage divider
At the bottom of the voltage divider
Next to the transitor
Next to the relay
As light level decreases, the resistance of an LDR ______
Increases
Decreases
Stays the same
To design a light sensor the LDR should be placed ....
At the top of the voltage divider
At the bottom of the voltage divider
Next to the transistor
Next to the relay
What type of sensor is this?
Light sensor
Dark sensor
Hot sensor
Cold sensor
Why is it useful to have a variable resistor in this circuit?
It allows you to set the light level that will turn something on.
It allows you to change the temperature
It allows you to set the brightness.
It allows you to set the temperature that will turn something on.
