# A potential difference of 20 volts is applied across the ends of a resistance of 5 ohms. What current will flow in the resistance?

**Given:**

Potential difference, V=20V

Resistance, R=5 ohms

**To find:**

Current, I

**Solution:**

According to the ohm's law:

$\mathrm{I}=\frac{\mathrm{V}}{\mathrm{R}}$

$\mathrm{I}=\frac{\mathrm{20}}{\mathrm{5}}$

= 4 A

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