(2) (2 point) Suppose you are facing a makeup-mirror on a vertical wall. Fluores

Question

(2) (2 point) Suppose you are facing a makeup-mirror on a vertical wall. Fluorescent tubes framing the mirror carry a clockwise electric current. (Note: it may be helpful to think of the mirror as being round, rather than square... answers to the questions don't depend on mirror's exact shape.) (i) What is the direction of the magnetic field at the center of the mirror created by the current? (a) left (e) horizontally away from you (f) horizontally toward you (g) no direction because the field has zero magnitude (b) rightcup (d) down (ii) What is the direction of the field the current creates at a point on the wall outside the mirror to the right? (a) left (e) horizontally away from you (f) horizontally toward you (g) no direction because the field has zero magnitude (b) rightcup (d) down (iii) How does the magnitude of the magnetic field at a point on the wall outside the mirror to the right compare to that of the field at the center of the mirror? (a) the outside field has larger magnitude (c) the outside field has the same magnitude (b) the outside field has smaller magnitude (d) the outside field has zero magnitude

Explanation / Answer

i) e) horizontally away from you.

Because, curl your right hand fingers in the direction of current then your thumb indicates the direction of magnetic field.

ii) f) horizontally towards you.

out side the loop the magnetic field will be opposite to the direction of magnetic field inside.

iii) b) the outside fiedl has smaller magnitude

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

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