Plz help me in this question

Dear Student

W h e n a - b c o n n e c t e d c u r r e n t c o m e s o n l y C_{1} n o t i n C_{2} S o c h a r g e d e p o s i t i o n o n C_{1} o n l y C_{1} = C_{2} = C U_{1} = \frac{1}{2} C V^{2} B u t a s b - c c o n n e c t e d b o t h C_{1} a n d C_{2} g e t s c h a r g e d U_{2} = \frac{1}{2} (C_{1} + C_{2}) V^{2} = \frac{1}{2} (C + C) V^{2} = C V^{2} % l o s s i n e n e r g y = \frac{U_{2} - U_{1}}{U_{2}} \times 100 = \frac{\frac{1}{2} C V^{2}}{C V^{2}} \times 100 = 50 %

Regards