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A level Physics > Electronics > Flashcards

Electronics Flashcards

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1
Q

Formula for resistance of a wire

A

R = resistivity * length / area

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2
Q

What happens when an A.C is passed through a piezo electric crystal

A

It stretches and squeezes creating sound

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3
Q

For a metal wire strain gauge what is the relationship between stretch and resistance

A

Proportional

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4
Q

5 properties of Op-amp

A

Input impedance, Open loop gain, Bandwidth and Slew rate

Zero output impedance

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5
Q

Gain of non-inverting amplifier

A

-R1/Rin where R1 is a negative feedback resistor

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6
Q

Gain of inverting amplifier

A

1 + R2/R1

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A level Physics (3 decks)

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