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Electric Current Through Conductors — Physics STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsElectric Current Through Conductors2 Marks
Question
What is current density? State its SI unit.
✓

Answer

i. Current density at a point in a conductor is the amount of current flowing per unit area of the conductor.
Current density, J $=\frac{I}{A}$
where, I = Current
$A=$ Area of cross-section
ii. SI unit: $A / m^2$

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