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Questions and Answers
What is the primary function of a variable resistor in a circuit?
What is the primary function of a variable resistor in a circuit?
- To provide a voltage drop
- To limit current flow and provide a voltage drop (correct)
- To increase the resistance
- To increase the current flow
What is the relationship between the resistance of a resistor and the current flowing through it?
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 (correct)
- As the resistance increases, the current flowing through the resistor increases
- As the resistance decreases, the current flowing through the resistor increases
- The resistance of a resistor has no effect on the current flowing through it
What is an example of a household appliance that uses a variable resistor?
What is an example of a household appliance that uses a variable resistor?
- Refrigerator
- Laptop
- Dimmer switch (correct)
- Toaster
If the third band is orange, what operation should be performed on the two-digit number to find the resistance?
If the third band is orange, what operation should be performed on the two-digit number to find the resistance?
What is the advantage of using the colour code to determine the resistance of a resistor?
What is the advantage of using the colour code to determine the resistance of a resistor?
What is the primary function of a variable resistor in a circuit?
What is the primary function of a variable resistor in a circuit?
What is the purpose of using a voltmeter and an ammeter in the experiment?
What is the purpose of using a voltmeter and an ammeter in the experiment?
What is the relationship between voltage and current in a circuit with a variable resistor?
What is the relationship between voltage and current in a circuit with a variable resistor?
What is a common household application of variable resistors?
What is a common household application of variable resistors?
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