Motional EMF Video Lessons

Concept

Problem: The rectangular loop in the figure has 2.1×10−2 ohm resistance. What is the induced current in the loop at this instant?

FREE Expert Solution

In this problem, the loop is moving. Thus, we are dealing with motional emf.

Emf:

$\overline{){\mathbf{\epsilon }}{\mathbf{=}}{\mathbf{B}}{\mathbf{l}}{\mathbf{v}}{\mathbf{s}}{\mathbf{i}}{\mathbf{n}}{\mathbf{\theta }}}$

The magnetic field due to a current-carrying conductor:

$\overline{){\mathbf{B}}{\mathbf{=}}\frac{{\mathbf{\mu }}_{\mathbf{0}}\mathbf{i}}{\mathbf{2}\mathbf{\pi }\mathbf{r}}}$

82% (86 ratings)
Problem Details

The rectangular loop in the figure has 2.1×10−2 ohm resistance. What is the induced current in the loop at this instant?