ch28-p069 - 69. (a) We use = B , where points into the wall...

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69. (a) We use G G G τµ B , where G µ points into the wall (since the current goes clockwise around the clock). Since G B points towards the one-hour (or “5-minute’’) mark, and (by the properties of vector cross products) G τ must be perpendicular to it, then (using the
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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