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Chapter 22: Q4PE (page 809)

Repeat Exercise 22.3 for a positive charge.

Short Answer

Expert verified

  1. The direction of the velocity of the positive charge will be towards the left or west.

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

  3. 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 direciton 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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Most popular questions from this chapter

Which of the particles in Figure 22.47 has the greatest mass, assuming all have identical charges and velocities?

Figure 22.62 shows a long straight wire just touching a loop carrying a current I1 . Both lie in the same plane.

(a) What direction must the current l2in the straight wire have to create a field at the center of the loop in the direction opposite to that created by the loop?

(b) What is the ratio of l1/l2that gives zero field strength at the center of the loop?

(c) What is the direction of the field directly above the loop under this circumstance?

Suppose two long straight wires run perpendicular to one another without touching. Does one exert a net force on the other? If so, what is its direction? Does one exert a net torque on the other? If so, what is its direction? Justify your responses by using the right hand rules.

(a) An oxygen\({\rm{ - 16}}\) ion with a mass of \({\rm{2}}{\rm{.66 \times 1}}{{\rm{0}}^{{\rm{ - 26}}}}{\rm{ kg}}\) travels at \({\rm{5}}{\rm{.00 \times 1}}{{\rm{0}}^{\rm{6}}}{\rm{ m/s}}\) perpendicular to a \({\rm{1}}{\rm{.20 - T}}\) magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the ratio of this charge to the charge of an electron? (c) Discuss why the ratio found in (b) should be an integer.

What force is exerted on the water in an MHD drive utilizing a25.0‐cm-diameter tube, iflocalid="1654594579558" 100‐Acurrent is passed across the tube that is perpendicular to alocalid="1654594587153" 2.00‐Tmagnetic field? (The relatively small size of this force indicates the need for very large currents and magnetic fields to make practical MHD drives.)
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