7. Use the integral form of Gauss' law to determine the electric field near to a long, thin wire with line charge densit

[answerhappygod]

7 Use The Integral Form Of Gauss Law To Determine The Electric Field Near To A Long Thin Wire With Line Charge Densit 1 (108.87 KiB) Viewed 5 times

7. Use the integral form of Gauss' law to determine the electric field near to a long, thin wire with line charge density .. Two thin particle beams of electrons, moving parallel to each other in a horizontal plane, 2 cm apart, are used to levitate a (small) 10 microgram ball bearing that carries a total charge of -e. If the velocity of the electrons is 4 ms-1, what beam current is needed in each beam to levitate the ball bearing a distance of 1 cm above the mid-point between the two beams? What happens if the ball bearing is pushed sideways?