Physics Lab 7

# Physics Lab 7 - Purpose To observe the effects of fixed and...

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Purpose : To observe the effects of fixed and varying magnetic fields when interacted with wires, extended surfaces, at rest or in motion, and electrical currents. Procedure: I. Single Wire in Magnetic Field – Using the switch on the apparatus, monitor and note the direction of the stiff wire when the switch is closed. Then, reverse the direction of the magnetic field and close the switch, monitor and note what direction the stiff wire moves when the switch is closed II. Wire Loop in a Magnetic Field a. Torque on a Current Loop – Close the switch in one direction and note the action of the loop, doing it sharply to get a kick off when closed. Reopen the switch at the end, and explain this motion in terms of direction of the field and current. Throw the switch in the opposite direction from the starting position, and observe and record the explanation for the motion like the above. b. Running Motor – Line up the coils and close the switch sharply, once a 180 degree revelation has been made, reverse the current and note the results. III. Single Wire in a Magnetic Field – Hold the wire in the indicated position between the poles of the magnet, and note if the galvanometer indicates any current. Move the wire downward and not any deflection in the galvanometer, try at different speeds and explain your observations. IV. Wire Loop in a Magnetic Field – Loop the wire to get two strands between the poles and repeat procedure III. Next try more turns, as many as possible and explain observations. V.

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Physics Lab 7 - Purpose To observe the effects of fixed and...

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