Given, capacitance of first capacitor, C1=10µF Potential difference across first capacitor, V1=250V Capacitance of second capacitor, C2=5µF Potential difference across second capacitor, V2=100V Since, C1andC2 are parallel,
∴ Ceff=C1+C2 and total charge, Q=Q1+Q2 Here, Q1=V1C1andQ2=V2C2 Now, common potential, V=