Find charge on 12nF which is in direct contact to battery (initially all capacitors are uncharged)
A
160nC
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
140nC
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
200nC
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
240nC
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A160nC
The given circuit is reduced to the circuits as shown above.
Wheatstone bridges with 5nF & 18nF do not get any charge. Now calculating the effective capacitance of the rest of the capacitors we get, Ceff across battery is 40nF. q=CeffV=160nC