TS EAMCET · Physics · Magnetic Effects of Current
The expression for the magnetic energy stored in a solenoid of length \(L\), in terms of magnetic field \(B\) and area \(\mathrm{A}\) is
- A \(\frac{1}{2 \mu_0} \mathrm{~B}^2 \mathrm{AL}\)
- B \(\frac{1}{2 \epsilon_0} \mathrm{~B}^2 \mathrm{AL}\)
- C \(\frac{1}{2 \mu_0} \mathrm{BA}^2 \mathrm{~L}\)
- D \(\frac{1}{2 \epsilon_0} \mathrm{BA}^2 \mathrm{~L}\)
Answer & Solution
Correct Answer
(A) \(\frac{1}{2 \mu_0} \mathrm{~B}^2 \mathrm{AL}\)
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The expression for the magnetic energy stored in a solenoid is given by…
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