试题详情

正弦交流电流i=10√2sin(100πt+30°)A,则频率为(____)。

A100Hz$;$100πHz$;$50$;$50Hz

B100Hz$;$100πHz$;$50$;$50Hz

C100Hz$;$100πHz$;$50$;$50Hz

D100Hz$;$100πHz$;$50$;$50Hz