Question

please could any one solve this
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Answer 1

The formula for the field inside the solenoid is B=μ0nI, where n=NL or the turn density and I is the current.

Given that number of turns, N=600 and the length of the solenoid, L=2.7m→n=6002.7≈222.22m−1

⇒B=4π×10−7N/A−2×222.22m−1×2.5A≈0.7mT

Explanation:

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