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Moving Charges and Magnetism question

2008 · Q129
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Moving Charges and Magnetism question

2008 · Q129

NEETPhysicsMoving Charges and MagnetismMCQ+4 / −1
A closed loop PQRS carrying a current is placed in a uniform magnetic field. If the magnetic forces on segments PS, SR and RQ are F1, F2 and F3 respectively and are in the plane of the paper and along the directions shown, the force on the segment QP is
AIPMT 2008 Physics - Moving Charges and Magnetism Question 41 English
  1. A
    (F3−F1)2−F22\sqrt {{{\left( {{F_3} - {F_1}} \right)}^2} - F_2^2}(F3​−F1​)2−F22​​
  2. B
    F3−F1+F2{F_3} - {F_1} + {F_2}F3​−F1​+F2​
  3. C
    F3−F1−F2{F_3} - {F_1} - {F_2}F3​−F1​−F2​
  4. D
    (F3−F1)2+F22\sqrt {{{\left( {{F_3} - {F_1}} \right)}^2} + F_2^2}(F3​−F1​)2+F22​​
View written solutionFree

Correct answer: D

According to the figure the magnitude of force on the segment QM is F3 – F1 and PM is F2.

AIPMT 2008 Physics - Moving Charges and Magnetism Question 41 English Explanation

Therefore, the magnitude of the force on

segment PQ is (F3−F1)2+F22\sqrt {{{\left( {{F_3} - {F_1}} \right)}^2} + F_2^2} (F3​−F1​)2+F22​​

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