We discussed a charged particle moving through crossed fields with the forces f_e and f_b in opposition. we found that the particle moves in a straight line (that is, neither force dominates the motion) if its speed is v = e/b. which of the two forces dominates if the speed of the particle is v < e/b? f_b f_e which of the two forces dominates if the speed of the particle is v > e/b? f_e f_b

Explanation:

Magnetic force = Bqv

Electric force = E q

Magnetic force = electric force

Bqv  = Eq

v = E / B

If v is less than E / B , magnetic force will become feeble because magnetic force is dependent on velocity of charged particle. ( magnetic force = Bqv )

Contrary to it , if v is more than E / B magnetic force will become stronger.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.