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Physics
Physics
Problem
A solenoid A has 800 turns wound uniformly over a length of
40
cm
40\,\text{cm}
40
cm
. Another solenoid B of the same length carries the same current but has 1200 turns. Find the ratio of the magnetic fields at the centres of the two solenoids,
B
A
:
B
B
B_A : B_B
B
A
:
B
B
.
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