AIPMT PRELIMS2008Physics-Magnetism
AIPMT PRELIMS 2008 Physics Magnetic Forces MCQ Question
Type: MCQ-conceptual-Hard-Class 12
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 :
A
√(F₃ - F₁)² - F₂²
B
F₃ - F₁ - F₂
C
F₃ - F₁ - F₂
D
√(F₃ - F₁)² + F₂²
Correct Answer
Option D
Detailed Explanation
The net force on a closed loop in a uniform magnetic field is zero. The forces must balance according to vector addition.
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