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1. Electric Charges and Fields
normal
Seven capacitors, each of capacitance $2\,\mu F$ are to be connected to obtain a capacitance of $10/11\,\mu F$ .Which of the following combinations is possible ?
A
$5$ in parallel $2$ in series
B
$4$ in parallel $3$ in series
C
$3$ in parallel $4$ in series
D
$2$ in parallel $5$ in series
Solution
$5(2\, \mu \mathrm{F})$ in series with $\left(\frac{2\, \mu \mathrm{F}}{2}\right), 10\, \mu \mathrm{F}$ in series with
$1\, \mu \mathrm{F}, \mathrm{C}_{\mathrm{eq}}=\frac{10 \times 1}{10+1}=\frac{10}{11}\, \mu \mathrm{F}$
Standard 12
Physics