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1. |
Find the magnetic field intensity at the radius of 6cm of a coaxial cable with inner and outer radii are 1.5cm and 4cm respectively. The current flowing is 2A. |
A. | 2.73 |
B. | 3.5 |
C. | 0 |
D. | 1.25 |
Answer» D. 1.25 | |