Does electric fields affect a compass

In summary, the conversation discusses the effect of an electric field on a compass needle. It is stated that an electric field between charged particles can potentially cause the needle to deflect, but without the presence of a magnetic field, the needle will not be affected. It is also noted that the electric field may induce surface charge on the needle, but it is uncertain if this will affect the needle's movement. The conversation concludes that even when emphasizing the electric field, the answer remains the same and that magnetic force is generally stronger than electrostatic force in terms of motor action.
  • #1
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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  • #2
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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  • #3
E field might induce surface charge on the needle. Don't know if you are meant to consider that possibility.
 
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  • #4
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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  • #5
As far as motor action, magnetic force is much stronger than electrostatic force unless you are dealing with high voltages.
 
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FAQ: Does electric fields affect a compass

1. How does an electric field affect a compass?

An electric field can affect a compass by causing the needle to deflect from its normal north-south orientation. This is because the needle of a compass is a small magnet and is influenced by the magnetic field created by the electric field.

2. Can an electric field completely reverse the direction of a compass?

Yes, an electric field can completely reverse the direction of a compass. This is because the electric field can overpower the Earth's magnetic field, which is much weaker, and cause the needle to point in the opposite direction.

3. What types of materials can create an electric field that affects a compass?

Any material that has an electrical charge can create an electric field that can affect a compass. This includes any type of metal, as well as non-metallic materials like plastic and glass.

4. Can the strength of the electric field affect the amount of deflection in a compass?

Yes, the strength of the electric field can affect the amount of deflection in a compass. The stronger the electric field, the greater the deflection in the compass needle will be.

5. How can I protect my compass from the effects of an electric field?

To protect your compass from the effects of an electric field, you can keep it away from any sources of electricity or strong electrical currents. Additionally, storing your compass in a shielded container or using a compass with a non-magnetic needle can also help minimize the impact of an electric field.

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