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Questions and Answers
What is the main factor responsible for the change in resistance of a semiconductor with increasing temperature?
What is the main factor responsible for the change in resistance of a semiconductor with increasing temperature?
- Addition of small amounts of another element
- Movement of charges
- Type of semiconductors
- Thermal agitation breaking bonds (correct)
What happens to the resistance of a thermistor as the temperature increases?
What happens to the resistance of a thermistor as the temperature increases?
- Remains constant
- Fluctuates unpredictably
- Decreases rapidly (correct)
- Increases rapidly
Which type of semiconductors add more free positive holes available for conduction?
Which type of semiconductors add more free positive holes available for conduction?
- P type (e.g. Boron and Silicon) (correct)
- Intrinsic semiconductors
- N type (e.g. Phosphorus and silicon)
- Extrinsic semiconductors
What is the function of a light-dependent resistor (LDR)?
What is the function of a light-dependent resistor (LDR)?
What do N type semiconductors (e.g. Phosphorus and silicon) add more of for conduction?
What do N type semiconductors (e.g. Phosphorus and silicon) add more of for conduction?
What is the process of adding small amounts of another element to a pure semiconductor to increase its conductivity called?
What is the process of adding small amounts of another element to a pure semiconductor to increase its conductivity called?
What is the movement of charges through a doped semiconductor referred to as?
What is the movement of charges through a doped semiconductor referred to as?
What kind of charge carriers can move across a P-N junction when it is formed?
What kind of charge carriers can move across a P-N junction when it is formed?
When a semiconductor diode is connected in forward bias, what is required for current to flow?
When a semiconductor diode is connected in forward bias, what is required for current to flow?
Which type of biasing allows a diode to act as an insulator?
Which type of biasing allows a diode to act as an insulator?
What is the main function of a rectifier?
What is the main function of a rectifier?
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