An electric field ofmagnitude 11000 N/C and directed upward perpendicular to the

Question

An electric field ofmagnitude 11000 N/C and directed upward perpendicular to theEarth’s
surface exists on a day when a thunderstorm is brewing. A truckthat can be approximated
as a rectangle 2.7 m by 3.2 m is traveling along a road that isinclined 13? relative to the ground.
Determine the electric flux through the bottom of the truck.

Answer in units of N · m2/C. An electric field ofmagnitude 11000 N/C and directed upward perpendicular to theEarth’s
surface exists on a day when a thunderstorm is brewing. A truckthat can be approximated
as a rectangle 2.7 m by 3.2 m is traveling along a road that isinclined 13? relative to the ground.
Determine the electric flux through the bottom of the truck.

Answer in units of N · m2/C.

Explanation / Answer

Flux =E*Area so, the area of the truck that the electric field sees is 2.7 *3.2*cos(13). You have to account for the incline in the road(cos(13)), this effectively decreases the area that the electricfield sees. So, to solve, just plug in the area of the truckin the flux equation. with an E of 11000 (assuming it's a uniform Efield).

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