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Any ideas or suggestion?

Homework Statement [/B] In a typical experiment to study the force between electric currents, identical fixed and movable wires were separated using a spacer thickness 0.6065cm. The radius of each wire was determined to be 0.162cm and the length of the movable wire was 26.5cm. The apparatus...

It's on the question 1b and 1c that are related to this.

This is what i tried so far

I see, alright let me work it out and i will post it. Thanks!

Basically I can solve this problem with positive charge distribution but just keep track of the minus sign? If so, then now i know how to solve it. Thanks a lot for your help!

The direction of the electric field vector at a position is the direction of the force experienced by a small positive test charge placed there *I understand this part, that's why I said electric field will be northwest due to point P. So what happens if the field is produced by a negative...

Homework Statement A plastic rod of finite length carries an uniform linear charge Q = -5 μC along the x-axis with the left edge of the rod at the origin (0,0) and its right edge at (8,0) m. All distances are measured in meters. Determine the magnitude and direction of the net electric...