试题与答案

由电场强度的定义式E=F/q可知,在电场中的同一点[ ] A、电场强度E跟F成正

题型:选择题

题目:

由电场强度的定义式E=F/q可知,在电场中的同一点[ ]

A、电场强度E跟F成正比,跟q成反比

B、无论检验电荷所带的电量如何变化,F/q始终不变

C、电荷在电场中某点所受的电场力大,该点的电场强度强

D、一个不带电的小球在P点受到的电场力为零,则P点的场强一定为零

答案:

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