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Monday Quiz: Low-current measurements

23 Nov 2015  | Martin Rowe

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1. The effect of placing a meter in series with the circuit under test for making DC current measurements is called:

The correct answer is d, Voltage Burden, sometimes called Burden Voltage.

2. Electrometers can be used to measure current. What is a typical input impedance of an electrometer?

The correct answer is d, 1TΩ.

3. Low-level noise in electronic components caused by temperature is called:

The correct answer is b, Johnson Noise.

4. Noise current generated by mechanical stress on susceptible materials is called:

The correct answer is a, Piezoelectric effect.

5. According to the paper mentioned on page 1, input offset current can be caused by:

The correct answer is e, a and b only.

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