Magnet and Current-carrying wire/circuit

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The discussion focuses on predicting the movement of a current-carrying wire in a magnetic field, emphasizing the use of the right-hand rule and Fleming's left-hand rule. The initial assumption is that the wire will move away from the magnet due to a northward force. It is also questioned whether the wire returning from the resistor to the source experiences the same force, with the assumption that it would be attracted to the magnet. Additionally, it is clarified that in the absence of a magnet, two long wires would not exert any force on each other. The conversation highlights the importance of correctly applying the right-hand and left-hand rules in electromagnetic contexts.
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Hi all Can you assist - I think that I am on the right track - but then I could be wrong..

View attachment Physics Question 1.doc

Homework Statement



Predict which direction the wire will move

Homework Equations



Right hand rule

The Attempt at a Solution



Current flows from positive to negative. Right hand rule has magnetic field - anticlockwise.
A northward force. The assumption is that the wire will move away from the magnet.


Two other related questions...

2. Would the wire returning from the resistor to the source be affected in the same direction and or as strongly. Explain?

I assume a southward field and therefore will be attracted to the magnet.

3. In the absence of the magnet, would the two long wires exert any force on each other? Explain.

No, force.



Cheers Petra
 
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zebra1707 said:

Homework Equations



Right hand rule

To work out the direction the wire will move you will need to use Flemings left hand rule, the right hand rule is for generators =]
 
Last edited:
HI Rory

Thanks for the reply. The question states (Remember the righthand rule).

RoryP said:
To work out the direction the wire will move you will need to use Flemings left hand rule, the right hand rule is for generators =]

Cheers Petra
 

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