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natta225 [31]
3 years ago
9

List two important things to remember when using an ammeter.

Engineering
1 answer:
Radda [10]3 years ago
3 0

Answer:

Ammeters must always be connected in series with the circuit under test. Always start with the highest range of an ammeter. Deenergize and discharge the circuit completely before you connect or disconnect the ammeter. In dc ammeters, observe the proper circuit polarity to prevent the meter from being damaged.

Explanation:

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A differential amplifier is to have a voltage gain of 100. What will be the feedback resistance required if the input resistance
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Answer:

required feedback resistance ( R2 ) = 100 k Ω

Explanation:

Given data :

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\frac{Vout}{V2 - V1 }  = \frac{R2}{R1}

= Voltage gain =  R2/R1

= 100 = R2/1

hence required feedback resistance ( R2 ) = 100 k Ω

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