NEET 2011
- Exam
- NEET
- Year
- 2011
- Subject
- Physics
- Chapter
- Magnetic Effects of Current
NEET 2011 · Physics · Magnetic Effects of Current
A current carrying closed loop in the form of a right angle...
A current carrying closed loop in the form of a right angle isosceles triangle is placed in a uniform magnetic field acting along . If the magnetic force on the is , the force on the arm is
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
\begin{gathered}\overrightarrow{\mathbf{F}}_{A B}=0 \\ \overrightarrow{\mathbf{F}}_{A B}+\overrightarrow{\mathbf{F}}_{B C}+\overrightarrow{\mathbf{F}}_{C A}=0 \\ \overrightarrow{\mathbf{F}}_{B C}+\overrightarrow{\mathbf{F}}_{C A}=0 \\ \overrightarrow{\mathbf{F}}_{C A}=-\overrightarrow{\mathbf{F}}_{B C}=-\overrightarrow{\mathbf{F}} \end{gathered}