two rods are connected to a source of voltage as shown. the polarity of the sour

Question

two rods are connected to a source of voltage as shown. the polarity of the source of voltage is changing periodically so that the rods are charged alternately as shown. True statement about this phenomena include which of the following?

I: A constant electric field is established throughout all space.

II: A changing electric field is produced near the rods.

III: Electromagnetic radiation is produced.

A I only B III only C I and II D II and III E I II and III

Explanation / Answer

As per the problem ..constant electric field is produced if the frequency is min less than 1hz.

So one is not correct

Due to the change in charge polarity there will be a change in electric field so continuous variation in electric field present and it is periodic with period of source voltage ..so 2 statement is correct.

This is the actually how antenna works.. Contionous change in polarity creays electromagnetic radiation.so statement 3 is also correct.

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