The Magnetic Force Between Two Parallel Conductors and Amperes Law - - PDF document

the magnetic force between two parallel conductors and
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The Magnetic Force Between Two Parallel Conductors and Amperes Law - - PDF document

The Magnetic Force Between Two Parallel Conductors and Amperes Law The Magnetic Field Near a Long Straight Wire The Magnetic Force Between Two Parallel Conduc- tors Amperes Law The Magnetic Field Created by a Long Current-


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SLIDE 1

The Magnetic Force Between Two Parallel Conductors and Ampere’s Law

The Magnetic Field Near a Long Straight Wire The Magnetic Force Between Two Parallel Conduc-

tors

Ampere’s Law The Magnetic Field Created by a Long Current- Car-

rying Wire

The Magnetic Field of a Solenoid Homework
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SLIDE 2

The Magnetic Field Near a Long Straight Wire

dB r ds r R θ s I

✁✄✂ ☎ ✆✞✝✠✟ ✡☞☛ ✌ ✁✎✍ ✏✒✑ ✓ ✔ ✕ ✌ ✕✗✖ ☎ ✆✞✝✘✟ ✡☞☛ ✁ ✑✚✙✜✛✣✢ ✤ ✕✥✖ ✕ ☎ ✦ ✑ ✖ ✧ ★ ✖ ✩✫✪ ✁ ✙✜✛✣✢ ✤ ☎ ✙✜✛✣✢ ✬ ☛ ✍ ✤✮✭ ☎ ★ ✑ ✖ ✧ ★ ✖ ✂ ☎ ✆✯✝✠✟ ★ ✡☞☛ ✰✲✱✴✳ ✵ ✳ ✁ ✑ ✶ ✑ ✖ ✧ ★ ✖✸✷✺✹✼✻ ✖ ✂ ☎ ✆✯✝✲✟ ✡☞☛ ★ ✽✾ ✾ ✾✿ ✑ ✑ ✖ ✧ ★ ✖ ❀❂❁ ❁ ❁ ❃ ❄ ❅ ❆ ❅ ☎ ✆✯✝✲✟ ❇ ☛ ★
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SLIDE 3

The Magnetic Force Between Two Parallel Current-Carrying Conductors

Serway/Jewett Figure 22.26

✂ ✖ ☎ ✆✞✝✘✟ ✖ ❇ ☛ ✩ ❈ ❉ ☎ ✟ ❉❋❊ ✂ ✖ ☎ ❊ ✆✯✝✲✟ ❉ ✟ ✖ ❇ ☛ ✩ ❈ ❉ ❊ ☎ ✆✯✝✲✟ ❉ ✟ ✖ ❇ ☛ ✩ ❈ ❊ ☎ ✆ ✝ ❇ ☛ ✟ ❉ ✟ ✖ ✩

The force is attractive if the currents are in the same di- rection and repulsive if they are in opposite directions.

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SLIDE 4

Ampere’s Law

Serway/Jewett Figure 22.27

✏ ✂ ❍■✁ ✍ ✏ ✑ ☎ ✆✯✝✲✟

where I is the total current passing through any surface bounded by the closed path.

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SLIDE 5

The Magnetic Field Created by a Long Current-Carrying Wire

Serway/Jewett Figure 22.30

✏ ✂ ❍■✁✎✍ ✏✒✑ ☎ ✆ ✝ ✟

Outside the wire

  • ❏✁
✑ ☎ ✂ ✬ ❇ ☛ ✕ ✭ ☎ ✆✞✝✘✟ ✂ ☎ ✆✞✝✠✟❑✝ ❇ ☛ ✕ ✬▼▲❖◆ ✕ ✕ P ★ ✭
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SLIDE 6

The Magnetic Field Created by a Long Current-Carrying Wire (cont’d)

Serway/Jewett Figure 22.30

Inside the wire

✟ ✟❑✝ ☎ ☛ ✕ ✖ ☛ ★ ✖ ◗ ✟ ☎ ✕ ✖ ★ ✖ ✟❘✝
✏ ✂ ❍■✁✎✍ ✏✒✑ ☎ ✂ ✬ ❇ ☛ ✕ ✭ ☎ ✆✞✝ ❙❚ ❚ ❚ ❚ ❚❯ ✕ ✖ ★ ✖ ✟❘✝ ❱❳❲ ❲ ❲ ❲ ❲ ❨ ✂ ☎ ❙❚ ❚ ❚❯ ✆ ✝ ✟ ✝ ❇ ☛ ★ ✖ ❱❳❲ ❲ ❲ ❨ ✕ ✬❩▲❬◆ ✕ ✕ ❭ ★ ✭
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SLIDE 7

The Magnetic Field Created by a Long Current-Carrying Wire (cont’d)

Serway/Jewett Figure 22.30 Serway/Jewett Figure 22.31

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SLIDE 8

The Magnetic Field of a Solenoid

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SLIDE 9

The Magnetic Field Inside an Infinitely Long Ideal Solenoid

Serway/Jewett Figure 22.34

✏ ✂ ❍■✁ ✍ ✏ ✑ ☎ ✆✯✝✲✟ ✰❫❪ ✍ ✏ ✂ ❍❴✁✎✍ ✏❵✑ ✧ ✰❜❛ ✍ ✏ ✂ ❍❝✁✎✍ ✏✒✑ ✧ ✰❡❞ ✍ ✏ ✂ ❍❝✁✎✍ ✏✒✑ ✧ ✰❣❢ ✍ ✏ ✂ ❍❝✁✎✍ ✏✒✑ ☎ ✆✞✝✲❤ ✟ ✰ ❪ ✂ ✁ ✑ ✧ ✐ ✧ ✐ ✧ ✐ ☎ ✆✞✝✲❤ ✟ ✂ ❊ ☎ ✆✯✝❥❤ ✟ ✂ ☎ ✆✯✝ ❤ ❊ ✟ ☎ ✆✞✝ ✪ ✟

where

✪ ☎ ❤ ❦ ❊ is the number of turns per unit length
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SLIDE 10

Homework Set 22 - Dur Wed. May 26

Read Sections 22.8 - 22.10 Do Problems 22.30, 22.31, 22.33 & 22.41