<{p}>If these other charges and currents <{u}>are comparable in size to the sources<{/u}> producing the above electromagnetic field, then a new net electromagnetic field will be produced.<{/p}>
发布于 2021-04-13 16:27:08
【单选题】 A make comparison with the size of the sources B are compared with the size of the sources C have similar size to the sources D take a common size of the sources