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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Debanjana Adhikari posted an Question
June 01, 2020 • 21:11 pm
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30 points
30 points
- CSIR NET
- Physical Sciences
Q38. an infinite solenoid carries a time varying current 7(t)= a, with a*0. the axis of the solenoid is along the direction. f and 6 are the usual radial and po
Q38. An infinite solenoid carries a time varying current 7(t)= A, with A*0. The axis of the solenoid is along the direction. f and 6 are the usual radial and polar directions in cylindrical polar coordinates. B= B+ B,0 + B_£ is the magnetic field at a point outside the solenoid. Which one of the following statements is true? (a) B =0, B, =0, B, = 0 (c) B, 0, B, 0, B, #0 (b) B, #0,B, +0, B = 0 (d) B, = 0, B, =0, B, + 0
2 Answer(s)
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Ruby negi
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option d is correct because the current is in theta direction(means currents flows in solenoid ) therefore according to right hand thumb rule,when you curl your finger (as fingers show direction of current) then the thumb shows the direction of m.f that is in the direction of z...
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Dhairya sharma![best-answer]()
whenever we have time varying current or current is the function of time magnetic field outside the soleniod will not be zero
i hope dear it will help u