MCQ
Choose the correct circuit which can achieve the bridge balance.
- A
- B
- C
- ✓
✓
Answer
Correct option: D.
d
In option ($4$),
In option ($4$),
$\frac{10}{15}=\frac{10}{5+R_D}$
The diode can conduct and have resistance $R_D=10 \Omega$ because diode have dynamic resistance. In that case bridge will be balanced.
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