Физика_10кл_ФО на англ

Appendix 3

Formative assessment, 10 class

Tasks

Option 1

1.      Compare with the correct answers

2.      Below are circuit with a diode. Which lamp grief?

3. The diagram shows the thermometer circuit with otitsatelnym temparaturnym coefficient thermistor. At a temperature of 30 ° C soproivlenie terorezistora 2.4 ohms and at a temperature of 100 ° sotvetstvenno resistance to 430 ohms umenshaetsya. Interior current source resistance is significantly small. Find the dressing on the yield.

4. Rassudeniem prove that the compound of InAs (indium arsenide), wherein the amount (a mol) of indium and arsenic are the same, has a conductivity type intrinsic conduction band four elements (Ge, Si). What type is conductivity with increasing indium concentration? Arsenic?

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5. To the ends of the chain consisting of a series connected PTC resistor and 1k, 20B energized. At room temperature, the current in the circuit was 5 mA. When temistor dropped into the burning water, the current in the circuit become 10mA. How many times had changed as a result of Narev thermistor resistance?

answers:

2.

3.

V_out=                                                                                                                     

V_out=´ 5.0

     V=

4. hole, e

 5. 3-fold decrease

option 2

1. Below are the current-voltage characteristic of the three elements A, B, C:

A) The lines A, B, C correspond to the current-voltage characteristics of the element?

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B) Which element has a constant resistance?

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C) Which element conducts current in only one direction?

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D) An increase in resistance of the element increases the amperage?

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2. Below are circuit with a resistor and a diode. Draw corresponding volts -ampernuyu schedule.

3. Write the appropriate element for each plot

4. Find the resistance of the semiconductor diode in the forward and reverse current directions, if the voltage across the diode 0.5V power 5mA current, and the voltage of 10V at a current strength of 0.1 mA.

Answers: Version 2

1.      A diode, a metal conductor, lamp heating

       The metal conductor

       With diode

      A heating Lama

2.       

3.      A) diode

B) a metal conductor

C) semiconductor

D) heating the lamp

4. R1 = 100 ohms; R2 = 100k