9 Questions
What is the primary function of a variable resistor in a circuit?
To limit current flow and provide a voltage drop
What is the relationship between the resistance of a resistor and the current flowing through it?
As the resistance increases, the current flowing through the resistor decreases
What is an example of a household appliance that uses a variable resistor?
Dimmer switch
If the third band is orange, what operation should be performed on the two-digit number to find the resistance?
Add three zeros
What is the advantage of using the colour code to determine the resistance of a resistor?
It is faster and easier to use a key
What is the primary function of a variable resistor in a circuit?
To regulate the voltage and current in the circuit
What is the purpose of using a voltmeter and an ammeter in the experiment?
To measure the voltage and current in the circuit
What is the relationship between voltage and current in a circuit with a variable resistor?
The voltage and current are inversely proportional
What is a common household application of variable resistors?
Light dimmers
Understand how a variable resistor affects a circuit, brainstorm household uses, and learn about color coding and reading resistors. Relate cause and effect in electrical circuits.
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