Calculating Charge on 10cm Diameter Sphere: 3700V

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Homework Help Overview

The problem involves calculating the charge on a conducting sphere with a specified diameter and voltage. The subject area pertains to electrostatics and the relationship between voltage, charge, and radius of a sphere.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to apply the formula relating voltage, charge, and radius but questions their calculation after receiving feedback. Participants inquire about the radius of the sphere, indicating a potential oversight in the original calculation.

Discussion Status

The discussion is ongoing, with participants providing feedback and clarifying details about the radius. There is an acknowledgment of a mistake, but no consensus on the correct approach has been reached yet.

Contextual Notes

The original poster's calculation may be affected by a misunderstanding of the radius, which is critical for applying the voltage formula correctly. The diameter of the sphere is given, but the conversion to radius appears to be a point of confusion.

FuzzyDunlop
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Homework Statement


the question is A conducting sphere has a diameter of 10 centimeters. If you measure its voltage to be 3700 V, what is the charge in μC you have put on the sphere?


Homework Equations



V=3700, D=0.1 m, V=kq/R

The Attempt at a Solution



3700= (8.987 * 10^9 * q)/.1

q=.041 microcoloumbs.

but it says I am wrong?? am i making a mistake someplace?
 
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What's the radius?
 
LowlyPion said:
What's the radius?

oh my god I am stupid. thanks
 
FuzzyDunlop said:
oh my god I am stupid. thanks

Careless ... maybe, but I suspect you will get over that.

Stupid? Not likely. You were smart enough to ask here.
 

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