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Card 16

Front

In a thermistor, what causes the resistance to change, and how does it change?

Back

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Card 17

Front

Why does the current pass through this diode (look at diagram)?

Back

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Card 18

Front

Define current.

Back

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Card 19

Front

How can the same motor be made to have different speed settings?

Back

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Card 20

Front

What are rarefractions?

Back

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Card 21

Front

How can ultrasound be used to treat a patient with kidney stones?

Back

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Card 22

Front

How do scientists stop nuclear fission reactions going out of control?

Back

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Card 23

Front

Nuclei of hydrogen isotopes undergo fission to form what kind of nuclei?

Back

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Card 24

Front

How do anti-static sprays work?

Back

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Card 25

Front

How does heating a thermistor affect the brightness of a lamp?

Back

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