Experiment Ek-04
Induced Currents Due to Changing Currents
Description: A
primary and a secondary coil are arranged so that changing fluxes in the primary
give induced currents in the secondary. The experiment shows that the induced
currents always try to maintain the magnetic field that existed before the change
started. The currents that are induced in the secondary exist only when the current
in the primary is changing.
Setup.
A galvanometer is attached to the secondary coil. The primary coil is connected
in series with a power source, a current limiting resistor and switch.
A bar is placed in the center of the coils, forcing the flux to go align and
run through both of the coils. This will increase the effect observed in the
previous part of the experiment.
A
bar has been added in the center of the two coils.
Materials: galvanometer,
power source, two coils, wires, switch, bar, current limiting resistor
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Friday August 15, 2008 8:37 PM
