MCQ
The effective capacity between $A$ and $B$ in the figure given is


- A$\frac{{43}}{{24}}\,\mu F$
- ✓$\frac{{24}}{{43}}\,\mu F$
- C$\frac{{43}}{{12}}\,\mu F$
- D$\frac{{12}}{{43}}\,\mu F$


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An electron is allowed to move normal to the propagation of light beam with a speed of $3 \times 10^{7}\;{ms}^{-1}$. What is the maximum magnetic force exerted on the electron ?