Physics - EMI/AC Question with Solution | TestHub

Immediately after the key K is closed, $\mathrm{I}=\frac{\epsilon }{{\mathrm{R}}_1}$

Immediately after the key K is closed, $\mathrm{I}=\frac{\epsilon }{{\mathrm{R}}_1+{\mathrm{R}}_3}$

Long time after key K is closed, $\mathrm{I}=\frac{\epsilon }{{\mathrm{R}}_1+{\mathrm{R}}_3}$

Long time after key K is closed, $\mathrm{I}=\frac{\epsilon }{{\mathrm{R}}_1+{\mathrm{R}}_2}$