Question

A magnet is moved close to a rubber band. How does the energy stored in the magnetic field change? (1 point)
Responses

The energy stored in the magnetic field does not change.
The energy stored in the magnetic field does not change.

The energy stored in the magnetic field increases.
The energy stored in the magnetic field increases.

The energy stored in the magnetic first increases and then decreases.
The energy stored in the magnetic first increases and then decreases.

The energy stored in the magnetic field decreases.

Answer 1

The energy stored in the magnetic field does not change.

Reason: a plain rubber band is nonmagnetic (and nonconducting), so bringing it near the magnet does not alter the magnet's field configuration or induce currents. The field energy (∝ ∫B^2 dV) therefore stays the same.