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A ring having a cross-sectional area of 800 mm2, a circumference of 200 mm and flux of 400 μWb has a coil of 100 turns wound around it. Calculate the flux density of the ring.
- A0.25 T
- B4 T
- C2 T
- D0.5 T
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CCommunity
Magnetic flux density is the magnetic flux per unit area.
$(B = \frac{{400 \times {{10}^{ - 6}}}}{{800 \times {{10}^{ - 2}}}} = 0.5\;T)$
$(B = \frac{{400 \times {{10}^{ - 6}}}}{{800 \times {{10}^{ - 2}}}} = 0.5\;T)$