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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityMicroscopicEasy2 minPYQ_2020

PhysicsEasysingle choice

A cylindrical wire of radius $R$ has current density varying with distance $r$ from its axis as $J (r) = J_{0} (1 - \frac{r^{2}}{R^{2}}) .$ The total current through the wire is

Options:

Answer:

Solution:

$I = \int_{0}^{R} J 2 π r d r$
$I = \frac{π J_{0} R^{2}}{2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Microscopic

⏱ 2mℹ️ Source: PYQ_2020

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