Electric Field at Point 36.0 cm from Rod Center

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Homework Help Overview

The problem involves calculating the electric field at a point 36.0 cm from the center of a uniformly charged rod that is 16.0 cm long and has a total charge of -24.0 µC. The context is within electrostatics, specifically focusing on electric fields generated by charged objects.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the application of Coulomb's law and the necessity of integrating the contributions from each charge element along the rod. Questions about the use of Gauss's law are raised, with some participants expressing uncertainty about its applicability in this scenario.

Discussion Status

The discussion includes attempts to clarify the appropriate methods for calculating the electric field, with some participants acknowledging misunderstandings about the problem's requirements. Guidance regarding the use of Coulomb's law has been provided, and there is recognition of the need for integration in the calculation.

Contextual Notes

Participants note the specific conditions of the problem, including the finite length of the rod and the requirement to calculate the electric field along its axis, which influences the approach taken.

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Do you know how to use the gauss law?
 
You'll need to integrate the field contribution from each charge element along the rod.
 
At praharmitra: No I don't know how.

At Doc Al: What is the equation for that?
 
Coulomb's law... the one you linked.

(FYI: Gauss's law won't help here.)
 
Doc Al said:
Coulomb's law... the one you linked.

(FYI: Gauss's law won't help here.)

Ah! you're right! I didn't read the bit where we need to calculate E along the axis! And I also missed the part where the rod wasn't infinite.

my bad.
 
Thank you. I got it.
 

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