21. The Singapore Sevens, like the Hong Kong tournament, is part of the World Sevens Series circuit . 22. They were often operated at high-voltage series circuits . 23. This year marks the first time the race has been included in the World Series circuit . 24. The modern style is, indeed, 6 cylindrical carbon-zinc cells stacked up to form the series circuit . 25. NASCAR does not limit testing at non-Nextel Cup Series circuits ( using Nashville, or USA International Speedway. 26. WITH : POINTS STANDINGS-- A list of points leaders on the Winston Cup and Busch series circuits . 27. Series circuits were popular since the higher voltage in these circuits produced more light per watt consumed.28. He is currently the owner and president of IndyCar, NASCAR and Grand-Am Rolex Sports Car Series circuit . 29. McCarthy currently is employed as a crew member for teams on the NASCAR Sprint Cup Series circuit . 30. Total conductance of a series circuits of pure resistors, therefore, can be calculated from the following expression:
