Um, well...i've been sick for the past week
and I came to class to do the lab, but spaced out :x
so, if anyone could pleasee XD help me with this
i would be very thankful <3
1. Why are the equipotential lines near conductor surfaces parallel to the surface?
2. Is it possible for two different equipotential lines or two lines of force to cross? explain.
3. Explain with the aid of a diagram, why electric field lines of force must be at the right angles to equipotential lines.
4. Under what conditions will a field between the parallel plates be uniform?
5. How does the electric field strength vary with distance from an isolated charged particle?
6. Sketch the equipotential lines for an isolated negatively charged partical, spacing the lines to show equal differences of potentials.
O_O; so please, help.
there's actually two other problems but it'd be hard to type out XD
since they have diagrams T_T;; but, yeah ._.;; ~
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Physics Help? ^^;~ things on electric fields O_O;
#2
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Posted 03 March 2008 - 03:12 PM
Well, hm.
1. Why are the equipotential lines near conductor surfaces parallel to the surface?
Because the charge is concentrated on the surface of the conductor.
2. Is it possible for two different equipotential lines or two lines of force to cross? explain.
It is not possible for two different equipotential lines or two lines of force to cross. That would basically mean that at a certain point, you would have two different potentials, which is impossible.
3. Explain with the aid of a diagram, why electric field lines of force must be at the right angles to equipotential lines.
Since electric field is the derivative of potential, that means that electric field will always be perpendicular to the potential.
4. Under what conditions will a field between the parallel plates be uniform?
If they are located equidistant from the parallel plates, since
E*d = V.
5. How does the electric field strength vary with distance from an isolated charged particle?
The field strength varies inverse square with distance from an isolated charged particle.
E = kq/(r^2)
6. Sketch the equipotential lines for an isolated negatively charged partical, spacing the lines to show equal differences of potentials.
Basically for an isolated charged particle, the equipotential lines would just be concentric circles around the negative charge.
1. Why are the equipotential lines near conductor surfaces parallel to the surface?
Because the charge is concentrated on the surface of the conductor.
2. Is it possible for two different equipotential lines or two lines of force to cross? explain.
It is not possible for two different equipotential lines or two lines of force to cross. That would basically mean that at a certain point, you would have two different potentials, which is impossible.
3. Explain with the aid of a diagram, why electric field lines of force must be at the right angles to equipotential lines.
Since electric field is the derivative of potential, that means that electric field will always be perpendicular to the potential.
4. Under what conditions will a field between the parallel plates be uniform?
If they are located equidistant from the parallel plates, since
E*d = V.
5. How does the electric field strength vary with distance from an isolated charged particle?
The field strength varies inverse square with distance from an isolated charged particle.
E = kq/(r^2)
6. Sketch the equipotential lines for an isolated negatively charged partical, spacing the lines to show equal differences of potentials.
Basically for an isolated charged particle, the equipotential lines would just be concentric circles around the negative charge.
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