11. (balance forces in selector) An electron moves through a region of crossed e

Question

11. (balance forces in selector) An electron moves through a region of crossed electric and magnetic fields. The electric field E-6000 v/m and is directed straight down. The magnetic field 8-1.5 T and is directed to the left. For what velocity v of the electron into the paper will the electric force exactly cancel the magnetic force? 12. A 6.0 A current runs along the x-axis. (12a) What is the magnitude of the magnetic field at the point (x, y) (3,-4) cm? (12b) What is the direction of the magnetic field at the point (x, y)-(3,-4) cm? (arrow head or arrow tail)-- 13. A long solenoid (diameter-5.0 cm) is wound with 400 turns per meter of thin wire through which a current of 400 mA is maintained. A wire carrying 10 A is inserted along the axis of the solenoid. What is the magnitude of the magnetic field at a point 2.0 cm from the axis? (13a) B, inside solenoid? (13b) Bw at d-2 cm? (13c) Direction of magnetic field of wire (RHR)? (Bw 1 B) or (Bw B.) (13d) The magnitude of the B at d-2 cm?

Explanation / Answer

ACCORDING TO THE CHEGG GUIDELINES I AM ALLOWED TO ANSWER ONLY (FIRST ) ONE QUESTION AT A TIME.
?QUESTION NO 1) E= 6000 V/M B = 1.50 T

E = V * B

V = E / B = 6000 V/M / 1.50 T = 4000 V ============================ANSWER)

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