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Chapter 22: Q4PE (page 811)

Repeat Exercise22.3for a positive charge.

Short Answer

Expert verified

(a) The direction of the velocity of the positive charge will be towards the left or west.

(b) The direction of the velocity of the positive charge will be outward to the page or towards you.

(c) The direction of the velocity of the positive charge will be towards the north or upwards.

Step by step solution

01

Define right-hand-rule-1

Considering the image for a better understanding of the Right-hand Rule:

Then according to the right-hand rule, the direction of the velocity is towards the direction of the thumb of the right hand. So, for the arrangement shown in the first figure. The direction of the velocity of the positive charge will be in the north (up) direction.

02

Explaining the direction of velocity for part (a)

Considering figure 22.51 (a) for a positive charge and applying RHR-1 such that, the direction of the magnetic force on a moving charge is said to be perpendicular to the plane formed by the velocity of the particle and the magnetic field intensity.

Therefore, the direction of the velocity of the positive charge will be towards the left or in the west direction.

03

Explaining the direction of velocity for part (b)

Consider figure 22.51 (b) for the positive charge and apply the RHR-1, and applying RHR-1 such that, the direction of the magnetic force is up and the direction of the magnetic field is in the right or east direction, and therefore the velocity of the charged particle will be outward to the page or towards you.

Therefore, the direction of the velocity of the positive charge will be outward to the page.

04

Explaining the direction of velocity for part (c)

Considering figure 22.51 (c) for the positive charge and applying RHR-1, we know that the direction of the magnetic force is on the left and the direction of the magnetic field is downwards therefore the velocity of the positively charged particle will be upward or in the north

Therefore, the direction of the velocity of the positive charge will be towards the north or upwards.

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