188 Auto Electricity and Electronics Copyright by Goodheart-Willcox Co., Inc. 21. Would test A be needed with these symptoms or conditions? 22. What does test B tell you? 23. Test C would verify: (A) Th at electricity is not leaking through the bulb socket. (B) Th at the ground does not have low resistance. (C) Th at the ground does not have high resistance. (D) All of the above. (E) None of the above. Figure 9-39. Use this circuit illustration to answer review questions 21 through 25. Switch Open Closed Fuse Bulb Dim (Disconnect Bulb While Testing) + – A B C D ~V OFF V Ω mA mA A ~ 2 V ~V OFF V Ω mA mA A ~ 0.0 Ω ~V OFF V Ω mA mA A ~ 10 V 24. What would you learn from test D? 25. How would you repair the circuit problem? Use the circuit drawing in Figure 9-39 to answer questions 21 through 25. Th e battery is 12 V (6 cells at 2.1 V each). Th e bulb burns very dimly with the switch on.