MCQ
A rectangular loop carrying a current $i$ is placed in a uniform magnetic field $B$. The area enclosed by the loop is $A$. If there are n turns in the loop, the torque acting on the loop is given by
- ✓$ni\,\overrightarrow A \times \overrightarrow B $
- B$ni\,\overrightarrow A \cdot \overrightarrow B $
- C$\frac{1}{n}(i\overrightarrow A \times \overrightarrow B )$
- D$\frac{1}{n}(i\overrightarrow A \cdot \overrightarrow B )$
