Question

Which of the following in electricity is analogous to momentum $mv$ in dynamics?

• A. IV
• B. IL
• C. QL
• D. IQ

Answer 1

Answer: (B)

IL

The following equation $V=L\frac{dI}{dt}$ is analogous to the equation $F=m\frac{dv}{dt}$ where $V$ and $F$ are the causes for the respective effects in electricity and mechanics.These equations when integrated w.r.t time gives $IL$ and $mv$ in the right hand side which are again analogous.