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formative assisment

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07.05.2020

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formative assisment.docx

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LO:

10.3.3.3 - Give examples on the use of semiconductor devices

Tasks 1 The figure shows a semiconductor device. Determine the type of this device

9-1

Task № 2 Find a pair

question	Answer
1. Intrinsic conductivity of semiconductors …	а) he more, the lower the temperature.
2. Semiconductor resistance ...	б) N-type semiconductors
3. Donor impurity allows you to get ...	в) Electron-hole.
4. Acceptor impurity allows you to get ...	г) p-type semiconductors
5. Electric current in semiconductors is ...	д) Directional motion of electrons and holes

Task 3

A voltage of 20 V is applied to the ends of the circuit consisting of a series-connected thermistor and a 1 kΩ resistor. At room temperature, the current in the circuit was 5 mA. When the thermistor was lowered into hot water, the current in the circuit became 10 mA. How many times has the resistance of the thermistor changed as a result of heating?

Assessment Descriptors:

· Knows the types of semiconductor devices

· Knows the mechanism of semiconductor conductivity

· Knows the features and properties of semiconductors

· Provides examples of the use of semiconductor devices

LO : 10.3.3.3 - Give examples on the use of semiconductor devices

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