PH-1223

Potential dividers

Physics · Secondary 4 · Hard · Potential dividers

A potential divider consists of a fixed resistor of

10\,\text{k}\Omega

in series with a variable resistor. They are connected across a

9.0\,\text{V}

supply. When the output voltage across the fixed resistor is

3.0\,\text{V}

, what is the resistance of the variable resistor?

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