MCQ
The potential difference between $A$ and $B$ in the Figure is ................... $\mathrm{V}$


- A$24$
- B$14$
- C$32$
- ✓$48$

$\mathrm{V}_{\mathrm{A}}-12-12-18+4-10=\mathrm{V}_{\mathrm{B}}$
$\Rightarrow \mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}=48 \mathrm{\,V}$
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Reason : Superconductors repel a magnet.
(Image)
$(A)$ $I_{\max }=\frac{V}{2 R}$ $(B)$ $I_{\max }=\frac{V}{4 R}$ $(C)$ $\tau=\frac{L}{R} \ln 2$ $(D)$ $\tau=\frac{2 \mathrm{~L}}{\mathrm{R}} \ln 2$