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电磁波与信息技术

> 有几位同学议论电磁波时，有以下几种说法，你认为不正确的是（） A．电磁波是由方向来回变化的电流产生的 B．通常使用的无线电波的频率为数百千赫至数百兆赫的那一部分 C．电磁波的频率等于一秒内电流振荡的次数 D．电磁波的波长就是电流每振荡一次电磁波向前传播的距离

问题：

发布时间：2024-09-07

有几位同学议论电磁波时，有以下几种说法，你认为不正确的是（）

A．电磁波是由方向来回变化的电流产生的

B．通常使用的无线电波的频率为数百千赫至数百兆赫的那一部分

C．电磁波的频率等于一秒内电流振荡的次数

D．电磁波的波长就是电流每振荡一次电磁波向前传播的距离

参考答案：

提问用户：hu***Nck

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