What is the primary function of a resistor in a simple lighting circuit?
Why Electronics Need Cooling - transistor heat sink

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To increase the voltage
To protect the LED by reducing current
To store electrical energy
To convert light into electrical energy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a voltage drop occur across a resistor?
Because resistors increase the flow of electrons
Because resistors convert electrical energy into light
Because resistors create a harder path for electrons, converting energy into heat
Because resistors store electrical energy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when electronic components exceed their thermal limits?
They convert heat into electrical energy
They start storing more energy
They become more efficient
They may break down and damage the circuit
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a heat sink help in cooling electronic components?
By converting heat into electrical energy
By increasing the surface area for heat dissipation
By reducing the size of the component
By storing heat
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of a fan in a cooling system?
To convert heat into light
To store heat for later use
To increase the electrical current
To blow air across components and remove heat
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is water cooling more efficient than air cooling?
Water has a higher heat capacity than air
Water is cheaper than air
Water increases the electrical current
Water can be stored more easily
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a potential drawback of using fans for cooling?
They can increase the size of the circuit
They are too quiet
They reduce the electrical current
They may blow hot air over other components
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