Suppose that you were looking down the barrel of a proton gun, as shown in the d

Question

Suppose that you were looking down the barrel of a proton gun, as shown in the diagram below.

As the proton (in the center of the diagram) moves toward you with constant velocity, v, it creates a B-field according to the right-hand rule. Consider how the B-field would change if the gun instead shot an electron with the same v.

1. What would happen to the strength of B?

Weaken/ strengthen/ remain the same?

2. In what direction would the new B field point?

Clockwise/ counter-clockwise/ out of the screen/ into the screen/ straight up/ straight down/ to the left/ to the right?

Explanation / Answer

(1) the magnetic field will remain same . that is because magnetic field depends upon charge and velocity which is same for electron and proton.

(b)clockwise

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