MULTIPLE CHOICE QUESTIONS 1) A positive charge enters a uniform magnetic field a

Question

MULTIPLE CHOICE QUESTIONS 1) A positive charge enters a uniform magnetic field as shown. What is the direction of the magnetic force? A) out of page B) into the page C) Downward D) Upward E) to the left 2) A beam of atoms enters a magnetic field region. What path will the atoms follow? A) a B) b C) c D) d 3) Two particles of the same mass enter a magnetic field with the same speed and follow the paths shown. Which particle has the bigger charge? A) a B) b C) both charges are equal D) impossible to tell from the picture 4) A rectangular current loop with a clockwise current is in a uniform magnetic field. What is the direction of the net force on the loop? A) +x B) +y C) zero D) -x

Explanation / Answer

1) option D) is correct.

Using the right-hand rule, you can see that the magnetic force is directed upwards.

Remember that the magnetic force must be perpendicular to both the B field and the velocity.

2) option B) is correct.

Atoms are neutral objects whose net charge is zero. Thus, they do not experience a magnetic force.

3) option B) is correct.

The relevant equation for us is: R = mv/(qB)

According to this equation, the bigger the charge, the smaller the radius.

4) option C) is correct.

Using the right-hand rule, we find that each of the four wire segments will experience a force outward from the center of the loop. Thus, the forces of the opposing segments cancel, so the net force is zero.

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.