Does electric fields affect a compass

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Homework Help Overview

The discussion revolves around the effects of electric fields on a compass needle, specifically distinguishing between electric and magnetic fields. Participants explore whether a compass will deflect in the presence of an electric field created by charged particles.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants question the influence of static electric fields on the compass needle, considering whether the absence of a magnetic field would result in no deflection. Some suggest that surface charges induced on the needle might play a role, while others reflect on the implications of emphasizing electric fields over charges.

Discussion Status

The discussion is ongoing, with various interpretations being explored regarding the interaction between electric fields and compass behavior. Some participants have provided insights into the potential effects of induced charges, but no consensus has been reached.

Contextual Notes

There is a focus on the distinction between electric and magnetic fields, and the discussion includes assumptions about the nature of static charges and their effects on the compass needle.

ikonic
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By electitc field, i do not mean the magnetic field produced by a current carrying wire, but rather between charged particles. If a compass is placed between the electric field, will the compass needle delfect or will it just continue pointing in the initial direction?
 
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If there doesn't exist magnetic field, then the needle will not be affected, will it? So just static charges I think won't move the needle, for they provide electric field only.
 
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E field might induce surface charge on the needle. Don't know if you are meant to consider that possibility.
 
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TSny said:
E field might induce surface charge on the needle.
Right...I really forgot this situation. However if he emphasize the "electric field" not the "charge," I think the answer is still the same?
 
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As far as motor action, magnetic force is much stronger than electrostatic force unless you are dealing with high voltages.
 
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