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Module 6 - Coggle Diagram
Module 6
Magnetic Fields
direction
- Outside the magnet from North to South.
- Inside the magnet from South to North
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- dot: point out of the plane
- cross: point into the plane
formula
Infinite Straight Wire
B=μ0I / 2pi r
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parallel wires:
- attract with same direction
- repel with opposite direction
Circular Loop
B=μ0I / 2R
single loop:
- attract with same direction
- repel with opposite direction
Magnetic Force
On a Moving Charge
F=qvBsinθ
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Magnetic Force as Centripetal Force:
- r=mv/qB
- T=2pi r/v
- a=qvB/m
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Right Hand Rules (RHR)
RHR-1: Determines the direction of magnetic force on a positive moving charge or a current in a wire.
- Thumb: Direction of current (I) or velocity (v).
- Fingers: Direction of the magnetic field (B).
- Palm: Direction of force (F) for a positive charge.
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