MCQOPTIONS
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MCQOPTIONS
| 1. |
A long solenoid has 200 turns per cm and carries a current of 2.5 amps. The magnetic field at its centre is \[({{\mu }_{0}}=4\pi \times {{10}^{-7}}\,weber/amp\text{-}m)\] [MP PET 2000] |
| A. | \[3.14\times {{10}^{-2}}weber/{{m}^{2}}\] |
| B. | \[6.28\times {{10}^{-2}}weber/{{m}^{2}}\] |
| C. | \[9.42\times {{10}^{-2}}weber/{{m}^{2}}\] |
| D. | \[12.56\times {{10}^{-2}}weber/\,{{m}^{2}}\] |
| Answer» C. \[9.42\times {{10}^{-2}}weber/{{m}^{2}}\] | |