physics

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The electrons in a beam are moving at 2.8 ×
108 m/s in an electric field of 17000 N/C.
What value must the magnetic field have if
the electrons pass through the crossed fields
undeflected?
Answer in units of µT

  • physics -

    q v B = q E, therefore
    B = E/v

    If E is in N/C and v is in m/s, the B field will be in Teslas

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