Question -
Answer -
Total required capacitance, C =2 µF
Potential difference, V =1 kV = 1000 V
Capacitance of each capacitor, C1 =1µF
Each capacitor can withstand a potentialdifference, V1 = 400 V
Suppose a number of capacitors are connected in seriesand these series circuits are connected in parallel (row) to each other. Thepotential difference across each row must be 1000 V and potential differenceacross each capacitor must be 400 V. Hence, number of capacitors in each row isgiven as
Hence, there are three capacitors in each row.
Capacitance of each row
Let there are n rows, eachhaving three capacitors, which are connected in parallel. Hence, equivalentcapacitance of the circuit is given as
Hence, 6 rows of three capacitors arepresent in the circuit. A minimum of 6 × 3 i.e., 18 capacitors are required forthe given arrangement.