It is required to consttruct a `10` mu F capacitor which can be connected across a 200V bettery . Capacitance 10 mu F are available but they can withstand only 50V ,Degin a combination which can yield the desired result .

Explanation

Let there are ' x' no. of capacitor in series i.e in a row
So, `x xx 50 = 200`
or `x = 4 capacitors `
Effective capacitance in a row = 0
Now , Let there are 'y' such rows
So, `xy = 10 `
`rArr` `y = 10x = 4 capacitors`
So the combination of 4 rows each of 4 capacitors