5C10.10

sample capacitors

Show many capacitor examples.

5C10.15

simple spherical capacitor

Charge a 8" sphere several times with an electrophorus, then repeat with a insulated conductor near, then repeat with a grounded conductor near. The number of sparks required to reach a potential varies.

5C10.20

field and voltage

Vary the spacing of a charged parallel plate capacitor while the voltage is measured with an electroscope.

5C10.21

battery and separable capacitor

Charge a parallel plate capacitor to 300 V, then move the plates apart until an electroscope deflects.

5C10.30

dependence of capacitance on area

As a chain is lifted out of a hollow charged conductor on an electroscope, the deflection decreases. When let back down, it increases again.

5C10.31

dependence of area on capacitance

A long rectangular sheet of charged tin foil is rolled up while attached to an electroscope.

5C10.32

dependence of capacitance on area

Hook up a charged radio tuning condenser to an electroscope.

5C10.33

Chinese lantern capacitor

Vary the length of an aluminum painted Chinese lantern to show the change of capacitance.

5C10.35

rotary capacitor

Charge a large rotary capacitor with a rod and watch an electroscope as the overlap is changed.

5C10.40

C=i/(dv/dt) demonstrator

Vary a potentiometer so that a constant current is maintained while charging a capacitor from a 90 volt battery. Measure the time.

5C10.50

inducing current with a capacitor

A charged ball moving between the plates of a parallel plate capacitor will induce a current in the external circuit.