A section of insulation material is placed between two conducting plates to be heated by non-conductive heat. The system is supplied with a voltage of 1000 V, and delivers a capacitance of 9 pF with an electric power factor of 0.05. What will be the frequency (MHz) of the supply to produce the necessary thermal effect equivalent to a power loss of 900 W?

• A. 1000/π
• B. 2000/π
• C. 2000π
• D. 1000π