The role of magnetic field on current demonstrator And Left hand rule demonstrator (physics lab equipment)
Negotiable /Set
Min.Order:500 Sets
Beijing Weichengya Laboratory Equipment Co., Ltd.
The role of magnetic field to current
- magnetic field to current demonstrator - left hand rule demonstrator
Aims and Demands:
Observing the function of magnetic field to electric current; Verify electrified conductor stress
direction and the relationship between the direction of magnetic field lines and current direction
is in line with the left hand rule.
Materials:
Horseshoe magnets, right and left hand rule demonstrator, student power, single pole switch,
slide rheostat, wire .
Experimental method:
1.Watching the movement of wire when current in the magnetic field.
According to the figure 3.22-1 will be left hand rule demonstrator and single-pole switch K R, student supplies, and slide rheostat connected.Put square coil below an edge in
a horse shoe magnet between the poles, so that it is in the middle of the horseshoe magnet and
level. Power supply the output current of 2 terminal, choose the output voltage 6 v.
First remove the magnet, closed switch, observe whether the coil move; To put the magnets
according to figure 3.22-1, close switch, observe whether coil is movement.If the magnetic field
for electrified conductor have force.
Conductor magnetic pole position, change the direction of current, observation Conductor
movement direction.Whether the force direction of magnetic field of electrified conductor changes
with the direction of current change.
Current direction invariable, exchange pole position, observe conductor movement direction.
Whether the force direction of magnetic field of electrified conductor changes according to the
direction of magnetic field lines?
2.Verify the left hand rule
Direction of the current in the conductor and the magnetic field are known,Use left hand rule
to determine force direction of the conductor, and then closed switch , pass into the current,
to see whether the direction of the conductors movement is right.
Known polarization direction and expectations after the current conductor movement direction,
first with his left hand rule determine the proper direction of magnetic field lines, then according
to the direction to place the poles, closed switch, access to current, see if conductor as expected
direction?
Use left hand rule to determine direction of magnetic field lines first, then the direction to place
the poles, close switch, access to current, see if conductor as expected move direction.
When power on, the relations of conductor force direction in magnetic field,current direction and
lines of magnetic force direction is in line with the left hand rule.