16The resistance of a wire is proportional to its:AWeight onlyBLengthCDiameterDCross-sectional areaView AnswerDiscussWorkspaceReportSaveEasy
17If the length of a wire is doubled and its area is halved, its resistance becomes:AFour timesBDoubleCHalfDUnchangedView AnswerDiscussWorkspaceReportSaveEasy
18A 12 V battery drives current through a 4 Ω resistor. The current is:A0.33 AB48 AC16 AD3 AView AnswerDiscussWorkspaceReportSaveMedium