Physics-
General
Easy
Question
A solenoid is long and its inner diameter is . It has three layers of windings of 1000 turns each and carries a current of . The magnetic flux for a cross-section of the solenoid is nearly
The correct answer is:
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There are two solenoids of same length and inductance L but their diameters differ to the extent that one can just fit into the other. They are connected in three different ways in series. (1) They are connected in series but separated by large distance, (2) they are connected in series with one inside the other and senses of the turns coinciding, (3) both are connected in series with one inside the other with senses of the turns opposite as depicted in figures 1, 2 and 3 respectively. The total inductance of the solenoids in each of the case 1, 2 and 3 are respectively
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The tangent to the curve has maximum slope at which is equal to
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