Physics Notes 11-07-07

# Physics Notes 11-07-07 - -Instead of moving a rod in a...

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Physics Notes 11-7-07 EXAM 2 = November 14 th , 2007 HW 8 DUE MONDAY November 12 th , 2007 F B =qv x B The x is the cross symbol, not a multiplication sign B denotes the magnetic field The magnitude of force is qv B sin(theta) The magnetic force on a current carrying wire is F B = IL x B L is the length vector X is the cross symbol Fingers go in direction of B, thumb goes in direction opposite of v, and when curled, knuckles point towards F m Delta V = E(strength of electric field) * L = vB * L F m = qvB = qE E = vB Delta V = E * L = vB * L Alternating current generators

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Unformatted text preview: -Instead of moving a rod in a straight line, why not simply rotate the wire? Then, the generator can stay in one place.-For a rotating wire, Delta V= vB * L * sin (theta)-Since theta is changing with time, theta = wt, where w is the angular speed-to translate the angular speed to regular speed, use v =wr, where r is the distance from the axis of rotation to the loop w is actually **omega**-w therefore = v/r-imagine a sin curve, the x axis is time, and the y axis is Delta V Big V is voltage, little v is speed...
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Physics Notes 11-07-07 - -Instead of moving a rod in a...

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