Measurements and Instrumentation

Q.

An oscilloscope has an input impedance consisting of 1 M`Omega` and 20 pF is parallel. A high impedance probe connected to input of this oscilloscope has a 10 M`Omega` series resistance. This 10 M`Omega` series resistance

A. may not be shunted
B. should be shunted by 2 pF capacitor
C. should be shunted by 20 pF capacitor
D. should be shunted by 200 pF capacitor

Answer : Option B

Explanation :