76from the wire. what ulthem gnituddirectionsdefinedby(a)and electron velocity i

Question

76from the wire. what ulthem gnituddirectionsdefinedby(a)and electron velocity is directed (a) toward the wire, (b) parallel to the wire in the direction of the current, and (c) perpendicular to the two directions defined by (a) and (b)? (a) Number -1.72e-15 (b) Number -1.72e-15 (c) NumberT A long straight wire carries a current of 34.6 A. An electron, traveling at 5.85 x 107 m/s, is 3.76 cm from the wire. What is the magnitude of the magnetic force on the electron if the UnitsT N (b) Number t.72e-15- Unitst Units N Unii

Explanation / Answer

1) a) B = uo i/2pi r

= 2e-7 *34.6/0.0376

= 0.00018404

F= qvB

= 1.6e-19*5.85e7*0.00018404

= 1.72e-15 N

b) F = qvB = 1.72e-15 N

c) F = 0 as direction velocity is parallel to field

2) a) Since point is outside cylinder, we will consider i from both wire and cylinder.

B = uo i /2pi r

   2.26e-6 = 2e-7*i/0.00465

i = 2.26e-6 *0.00465 / 2e-7

   = 0.052545 A = 52.5 mA

iwire = 52.5 -34.8 =17.7 mA = 0.0177 A

b) direction is upward

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

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