A rolled-paper capacitor of value 0.02 µF is to be constructed using two strips of aluminium of width 6 cm, and, wax impregnated paper of thickness 0.06 mm whose relative permittivity is 3. The length of foil strips should be:

A. High permittivity B. Low permittivity C. Permittivity same as that of air D. Permittivity which is neither high nor low

A. Air cored B. Cast iron cored C. Sheet steel cored D. Iron alloy cored

A. Remains constant B. Increases C. Decreases D. First decreases then increases

A. True B. False