Question 622: Current Electricity

Question

Choose the correct circuit which can achieve the bridge balance.

Accepted Answer

In option (1),
$$
\frac{10}{15}=\frac{10}{5+R_D}
$$
The diode can conduct and have resistance $$R_D=10 \Omega$$ because diode have dynamic resistance. In that case bridge will be balanced.

Answer

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Current Electricity

Choose the correct circuit which can achieve the bridge balance.

Choose the correct answer: