state oersted experiment
Answers
The magnetic effect of current was discovered by H.C. Oersted in 1820. He observed that flow of electric current through a conductor produce a magnetic field around it. The magnetic effect of current can be demonstrated by doing following experiment.
Experiment to Demonstrate the Magnetic Effect of Current
First of all make a simple electrical circuit by joining a long straight wire with a battery and a plug. Now, take a magnetic compass needle and place the straight wire parallel to and over the compass needle. Then switch on the circuit so that current flows through the wire from south to north directions. Now, you will found that the north pole of compass needle gets deflected towards the west.
But, if the direction of current in the wire is reversed then the north pole of the compass needle gets deflected towards the east.
The direction of deflection of magnetic needle can be easily determined by SNOW rule. According to SNOW rule, when current flows through a conductor from South to North direction and the wire is held over magnetic needle then the north pole of the magnetic needle deflects towards west.....
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Problem
Observe electromagnetic induction by recreating Oersted’s Experiment.
What will happen when you bring the compass towards the current loop?
Materials
D battery
Insulated wire
Electrical tape
Compass
Box
Electical tape
Procedure
Cut a 1 meter loop of insulated wire.
Use electrical tape to secure a stripped end of the wire to one side of a D battery.
Run the wire up one side of the box, across the top, and down the other side. Make sure you have enough wire so that itcan run along the table or ground to reconnect the battery. Now you have a loop!
Connect the other open end of the wire to the battery so current begins to flow.
Bring the compass into the center of the loop. What happens?
Move the compass around closer to the wire and away from the wire. Record your observations.
Results
The wire will carry a current that creates a magnetic field around itself. Bringing the compass near the wire or in the loop will cause the compass needle to move.