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- Use rod and fur to charge conductors. To
determine charge distribution on conductors use wand and electroscope, or
proof plane and Faraday Ice Pail (right) with electrometer.
- According to theory, no charge should reside
on the inner side of a hollow conductor.
Location
- Conductors: L01, section B1.
- Rod and fur: L01, section A2.
- Wand and proof plane: L01, section A2, plastic
bin.
- Faraday Ice Pail: L01, A2.
- Electrometer: L01, A1.
- Demonstrate 1/r^2 dependence of Coulomb force.
- For accurate measurements, potential difference between charged
spheres should be maintained using high-voltage power supply.
- For less-quantitative measurement, spheres can be charged
with rod and fur. Charge on sphere can then be measured using proof plane,
Faraday Ice Pail, and electrometer (right).
Location
- Coulomb Apparatus: L01, section A2.
- Proof plane: L01, section A2, plastic bin.
- Faraday Ice Pail: L01, A2.
- Electrometer: L01, A1.
- Use the ice pail in conjunction with an electrometer (shown)
to measure charge and potential difference. Touch the Proof Plane to the point of interest on the charged body, then place the Proof Plane inside the ice pail. The Electrometer reading will be directly proportional to the charge
on the Proof Plane.
- Located in L01: proof planes-section A2; electroscope- section
A1; Ice Pail- section…