crazy physics question.. tough one

synapse

Senior Member
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hey guys. can u figure this out? i don't get it..

A charge Q = -10-6 C is moving at a speed of 10,000 m/s through a magnetic field. If the field B = 3 Tesla, what is the largest possible magnetic force on the charge?

F = ?

firebird69guy

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synapse said:
hey guys. can u figure this out? i don't get it..

A charge Q = -10-6 C is moving at a speed of 10,000 m/s through a magnetic field. If the field B = 3 Tesla, what is the largest possible magnetic force on the charge?

F = ?

F = QvBsin(theta)

so... 10 x 10,000 x 3 x sin 90

= 3 x 10^5 N

That's my guess.

Parscope

Junior Member
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synapse said:
hey guys. can u figure this out? i don't get it..

A charge Q = -10-6 C is moving at a speed of 10,000 m/s through a magnetic field. If the field B = 3 Tesla, what is the largest possible magnetic force on the charge?

F = ?
F = qvBsin(@)

In order to get the largest possible force, the charge would have to be moving perpendicular to the B field, so F = qvB.

F = (.000001 C)(10,000 m/s)(3 T) = .03 Newton

Shrike

Lanius examinatianus
10+ Year Member
Par is right, unless I'm missing something; firebird, you misread the problem (which was easy to do): it was 10^(-6) coulombs. Remember, a Coulomb is a lot of charge.

The charge was given as negative, so either use left hand rule or switch the RHR answer once your done, whichever you promise to remember unfailingly.

Daichi Katase

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hmmmmmm.....it does say coulomb unless sleep deprivation is catching upto me.

Turkeyman

Trickster Poultry
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DetectiveChubby said:
hmmmmmm.....it does say coulomb unless sleep deprivation is catching upto me.
Yeah that's what Shrike said, 10^-6 coulombs =D

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Oh