A) 0.5 A
B) 0.7A
C) 5 A
D) 7A
Correct Answer: B
Solution :
Impedence of circuit \[Z=\sqrt{{{R}^{2}}+{{\omega }^{2}}{{L}^{2}}}\] \[\begin{align} & =\sqrt{{{(220)}^{2}}+{{(2\pi \times 50)}^{2}}\times {{(0.7)}^{2}}} \\ & 220\sqrt{2} \\ \end{align}\] \[i=\frac{E}{Z}=\frac{220}{220\sqrt{2}}-\frac{1}{\sqrt{2}}=0.7\,\text{amp}\]
You need to login to perform this action.
You will be redirected in
3 sec
