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Electric Bell
Source: Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 556 Copyright: 2009, Florida Center for Instructional Technology. See license. | Clipart ETC | Alternate Sizes |
E - Electromagnet, H - Striker, P - Switch C - When the striker is attracted to the electromagnet, the circuit is opened and the striker returns to its initial position
Ex 4) Magnetic field around Solenoid (Electromagnet) (conductor arranged in a coiled pattern) North and South Pole
1. Determine North and South pole with ...
a) North Pole of a Compass
b) 2nd Left Hand Rule
Why Left and
not right?? Step 1 - Current travels from
Step 2 - WITH PALMS AWAY, point the fingertips of left hand in direction of current
Step 3 - Thumb - North Pole!!
Right
Bottom
Left
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