What is the size and direction of the force on each segment in this gif?

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Homework Help Overview

The discussion revolves around determining the size and direction of the force on segments of an electric circuit depicted in a GIF. The context involves concepts from electromagnetism, particularly the interaction between electric currents and magnetic fields.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate the force on a segment using the sine of an angle, questioning why a different value is presented in the discussion. Other participants engage by clarifying the setup and dimensions of the circuit.

Discussion Status

The discussion is active, with participants exploring the implications of the circuit's geometry and the correctness of the original poster's reasoning. Clarifications about the dimensions and angles involved are being provided, but no consensus has been reached.

Contextual Notes

There is a mention of a 45-degree angle between the electric field and magnetic field, and confusion arises regarding the dimensions of the segments involved in the calculations. The original poster's assumptions about the geometry are being questioned.

krot
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i need to figure out the size and direction of the force on each segment

http://i32.tinypic.com/1075g8g.gif

in cd segment there is a 45 degree between the electricity and magnetic field
so i need to have size 40*sin 45

why they write only 40
??
 
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am i correct?
 
Welcome to PF!

Hi krot! Welcome to PF! :wink:

Your picture shows a cube with an electric circuit along adjacent j and k edges, and returning along ij and ik face-diagonals, with a uniform magnetic field in the j direction.
krot said:
in cd segment there is a 45 degree between the electricity and magnetic field
so i need to have size 40*sin 45

why they write only 40
??

you would only need 40sin45º if the diagonal was 40 …

it isn't! :smile:
 
krot's been caught. He's a previously banned member.
 

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