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`        An aluminum wire of diameter 4mm carries a current of 4.4 A.The current density is `
4 months ago

Arun
23020 Points
```							So here we've an aluminum wire of thickness 4mmThus, r=2mm and I=2.2ACurrent Density,J=I/AA= πr²= π(2x10^-3)²J= (2.2/π(2x10^-3)²) =1.75x0^5 A/m²
```
4 months ago
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• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions