Learn Audio Electronics with Arduino

Appendix 1

Self-study questions

The answers to all self-study questions in the book are provided here, indexed by chapter.

Chapter 1

Scales

Q1: What is the total current I_tot, as a result of adding 100mA and 3mA?

Q2: What is the total voltage V_out as a result of adding 10μV and 7mV?

I1=100mA=100×10−3VI2=3mA=3×10−3V

TotalCurrent,Itot=I1+I2

Itot=100×10−3+3×10−3=(100+3)×10−3=103mA

V1=10μV=10×10−6VV2=7mV=7×10−3V

TotalVoltage,Vtot=V1