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Magnetic Effects of Electriuc Current

Ampere’s circuital law

• The line integral of magnetic field induction $\stackrel{\to }{B}$ around a closed path in vacuum is equal to m0 times the total current I threading it.
${\int }_{}\stackrel{\to }{B}.d\stackrel{\to }{l}={\mu }_{0}nI$
Applications of Ampere's circuital law
• Magnetic field (B) due to a long straight conductor carrying current is given by .
Here, r = radius and I = current

Solenoid
• It consists of an insu…

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