A long thin hollow metallic cylinder of radius R has a current i ampere. The magnetic induction B away from the axis at a distance r from the axis varies as shown in
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
For hollow metallic cylinder, magnetic field inside is zero while outside it the magnetic field is inversely proportional to distance from center of cylinder.
So, variation is correctly shown by graph .
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