Question

A 220 V main supply is connected to a resistance of 100k $\Omega$ . The rms current is

• A. 22 mA
• B. 2.2mA
• C. 220mA
• D. 10 mA

Answer 1

The correct option is B 2.2mA

$I_{rms}=\frac{V_{rms}}{R}=\frac{220}{100\times {10}^3}$
$=2.2\times {10}^{-3}A$
$=2.2mA$