Question

1. State two factors that affect the capacitance of a parallel plate capacitor.    
2. The figure below shows an arrangement of capacitors connected to 12.0V d.c. supply.
   
   Determine;
   1. The effective capacitance.   
   2. The total charge in the capacitors.   
   3. The charge store in the 3μF capacitor. 

Answer 1

1.  
   1. Distance between the plates
   2. Overlap area of the plates
   3. Dielectric material between the plates.
2.  
   1. 
      
      =1μ + 3μF
      =4μF
   2. Q=CV
        =4 × 10⁻⁶F ×12V
        =4.8 × 10⁻⁵C
   3. Q=CV
        =3 × 10⁻⁶F × 12V
        =3.6 × 10⁻⁵C