H2P-427

Deflection of charged beams

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

In a velocity selector, charged particles pass through perpendicular electric and magnetic fields. The electric field strength is adjusted to 1.8 × 10

^{4}

V m

^{-1}

and the magnetic flux density is 0.30 T. What speed of particles will pass straight through undeflected?

6.0 × 10 $^{4}$ m s $^{-1}$
5.4 × 10 $^{3}$ m s $^{-1}$
3.0 × 10 $^{3}$ m s $^{-1}$
9.0 × 10 $^{4}$ m s $^{-1}$

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