Question

Find $X$ so that ammeter reads zero in the circuit shown below.

• A. $600\Omega$
• B. $300\Omega$
• C. $200\Omega$
• D. $150\Omega$

Answer 1

The correct option is B $300\Omega$

Voltage divides rule-

$V_x=\frac{v_s\left(x\right)}{x+600}$

$2=\frac{3_{6}x}{x+600}$

$3x=x+600$

$x=300$