Find the magnetic field inside a long solenoid of 1000 turns per metre carrying current $I = 2$ A.
Find the magnetic field inside a long solenoid of 1000 turns per metre carrying current $I = 2$ A.
1 Answer
VAVidaara Admin
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· 2mo ago
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$$B = \mu_0 n I = 4\pi\times10^{-7} \times 1000 \times 2 = 8\pi\times10^{-4}$$
$$B \approx 2.51\times10^{-3} T = 2.51 mT$$
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Discussion (4)
P
Quick doubt: would this method still work if the numbers were not so clean?
SD
Plotting it roughly also helps you sanity-check the sign.
C
Does this approach generalise to the JEE Advanced version of this question?
S
Does this approach generalise to the JEE Advanced version of this question?