H2P-436

Deflection of charged beams

H2 Physics · JC 2 · Medium · Deflection of charged beams

In a velocity selector, a beam of singly charged ions passes undeflected through perpendicular electric and magnetic fields. The electric field strength is

4.0\times10^{3}\,\text{V m}^{-1}

and the magnetic flux density is

0.080\,\text{T}

. What is the speed of the ions?

$5.0\times10^{4}\,\text{m s}^{-1}$
$3.2\times10^{5}\,\text{m s}^{-1}$
$6.4\times10^{2}\,\text{m s}^{-1}$
$2.0\times10^{3}\,\text{m s}^{-1}$

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