Question 697: Current Electricity

Question

The magnitude of resistance $X$ in the circuit shown below in the figure, when no current flows through the $5 \Omega$ resistor, is

Accepted Answer

As no current flows through the middle $5 \Omega$ resistor, the circuit represents a balanced Wheatstone bridge.
$$	herefore \quad \frac{X}{18}=\frac{2}{6} 	ext { or } X=\frac{2}{6} 	imes 18=6 \Omega$$

Answer

3$\Omega$

Answer

4$\Omega$

Answer

6 $\Omega$

Answer

8 $\Omega$

Current Electricity

The magnitude of resistance X in the circuit shown below in the figure, when no current flows through the 5 \Omega resistor, is

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