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      Question

      A closely wound solenoid 40 cm long has 5 layers of

      windings of 400 turns each. The diameter of the solenoid is 2 cm. If the current carried is 8.0 A, estimate the magnitude of B inside the solenoid near its centre.
      A 16ฯ€ ร— 10^โˆ’3 T Correct Answer Incorrect Answer
      B 16ฯ€ ร— 10^โˆ’4 T Correct Answer Incorrect Answer
      C 16ฯ€ ร— 10^โˆ’2 T Correct Answer Incorrect Answer
      D 16ฯ€ ร— 10^โˆ’5 T Correct Answer Incorrect Answer

      Solution

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