MCQ
In the shown circuit, what is the potential difference across $A$ and $B$
- A$50 \mathrm{~V}$
- ✓$45 \mathrm{~V}$
- C$30 \mathrm{~V}$
- D$20 \mathrm{~V}$
✓
Answer
Correct option: B.
$45 \mathrm{~V}$
(b) If all are in series then $R_{e q}=12 \Omega$If all are in parallel then $R_{e q}=\frac{4}{3} \Omega=1.33 \Omega$If two are in series then parallel with third, $R_{e q}=\frac{8}{3}=2.6 \Omega$If two are in parallel then series with third, $R_{e q}=6 \Omega$
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