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Physics 15 Online
OpenStudy (anonymous):

An electron is travelling East through a magnetic field directed south. In which direction is the force on the electron?

OpenStudy (anonymous):

|dw:1405210912522:dw| into the Earth I wrote it wrong.

OpenStudy (anonymous):

F = q ( V x B )

OpenStudy (anonymous):

cross multiplication.

OpenStudy (anonymous):

ok so the direction of force would be downward?

OpenStudy (anonymous):

Right. Do you know how to get the resultant direction of cross multiplication.

OpenStudy (anonymous):

No I don't how

OpenStudy (anonymous):

The most important thing is to know the arrangement of 2 vectors and which is first as V x b doesn't equal B x V. the equation F= q (V x B ) Then draw them |dw:1405211325283:dw| and use the right hand rule to get the direction by starting from first one in the cross product which V. |dw:1405211432107:dw|

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