Q.1. Sakib, a medical student, connects an instrumentation amplifier to the body of a patient as shown
below to record a single-lead ECG. The electrode skin interface resistances RLA, and RLL are used for safety
purposes. You may assume the op-amps are ideal with infinite gain and infinite input impedance. How can
this instrumentation amplifier eliminate noise which is created by the circuit? Explain with proper
mathematical analysis.