1. Tardigrade
  2. Question
  3. Physics
  4. The energy stored in the magnetic field if current of 5 A produces a magnetic flux of 2 × 10-3 Wb through a coil of 500 turns is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The energy stored in the magnetic field if current of $5\, A$ produces a magnetic flux of $2 \times 10^{-3} Wb$ through a coil of 500 turns is

Electromagnetic Induction

Solution:

$N \phi =L I$
$L=\frac{N \phi}{I} =\frac{500 \times 2 \times 10^{-3}}{5}=0.2\, H.$ Energy stored,
$U_{m}=\frac{1}{2} L I^{2}=\frac{1}{2} \times 0.2 \times(5)^{2}=2.5\, J$