# Uniformly Decreasing Magnetic Field#

The magnetic field at all points within the cylindrical region whose cross-section is indicated in the accompanying figure starts at magnetic field of 3.0 $$\textrm{ T}$$ and decreases uniformly to zero in 30 $$\textrm{ s}$$.

## Part 1#

What is the magnitude of the electric field when $$r$$, the distance from the geometric center of the region, is $${{params.r }} \textrm{ cm}$$?

## Part 2#

What is the direction of this electric field?