Question

Determine the virtual value of ac current shown in figure.

• A. $3A$
• B. $4A$
• C. $5d$
• D. $2A$

Answer 1

Answer: (D)

According to the rule
$I_{r.m.s}=\sqrt{\frac{I_1^2+I_2^2+I_3^2}{N}}$
$=\sqrt{\frac{2^2+2^2+2^2}{3}}$
$I_{rms}=2A$