PD-1

Two condenser of capacities 1 muF and 2 muF are connected in series and the system is charged to 10 volts. Then the P.D. on 1 muF capacitor (in volts) will be

In the figure,ABCD is a parallelogram and PQR is a rectangle.If AP:PB=1:2=PD:DR, what is the ratio of the area of ABCD to the area of PBQR?

In a trapezium ABCD, AB is parallel to DC. The diagonals AC and BD intersect at P. If AP: PC = 4 : (4x - 4) and BP:PD = (2x - 1): (2x + 4) , then what is the value of x ?