问题
多选题
如图所示,理想变压器的原副线圈匝数比n1:n2=1:10,副线圈与阻值R=20Ω的电阻相连.原线圈两端所加的电压u=20![]() A.副线圈输出交流电的频率为10Hz B.交流电压表的示数为20 C.电阻R上消耗的电功率为2kW D.原线圈中电流的最大值为100A ![]() |
答案
AC
如图所示,理想变压器的原副线圈匝数比n1:n2=1:10,副线圈与阻值R=20Ω的电阻相连.原线圈两端所加的电压u=20![]() A.副线圈输出交流电的频率为10Hz B.交流电压表的示数为20 C.电阻R上消耗的电功率为2kW D.原线圈中电流的最大值为100A ![]() |
AC
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Han Ting: Hello. This is Han Ting. May I speak to Allen, please? Allen: 1____________ Han Ting: Hi, Allen. How are you? Allen: Fine, thanks. How are you? Han Ting: I'm fine. Thank you. Allen, Ineed some help. 2____________ Allen: Sure. 3____________ Han Ting: There is something wrong with my computer. Can you mend it? Allen: Certainly, but not today. 4____________ HanTing: OK. Thanks a lot. 5____________ |