Question

A delivery truck with 2.8-m-high aluminum sides is driving west at 75 km/h in a region where the earth's magnetic field is bu = 15.0 * 10-5 t, north2. a. What is the potential difference between the top and the bottom of the truck's side panels? b. Will the tops of the panels be positive or negative relative to the bottoms?

Answer 1

The potential difference between the top and bottom of the truck's side panels is 0.0315 V. The tops of the panels will be negative relative to the bottoms.

Step-by-step explanation:

In this scenario, the potential difference between the top and bottom of the truck's side panels can be calculated using the formula V = B*d*v, where V is the potential difference, B is the magnetic field strength, d is the height of the sides, and v is the velocity of the truck. Plugging in the given values, the potential difference is V = (15.0 * 10^-5 T)(2.8 m)(75 km/h) = 0.0315 V.

The tops of the panels will be negative relative to the bottoms. This is because the truck is moving west and the magnetic field is directed north. According to the right-hand rule, the induced current will flow in a direction that creates a magnetic field opposing the change in the original magnetic field. This means that the bottom of the panels will have a higher potential than the top, resulting in a negative potential difference.