Question

a charged rod P attracts rod R whereas P repels another charged rod Q . what type of force is developed between Q and R ?

Answer 1

supposing P is +ve &R is negative so P will. attract R
we had consider P +ve
now let Q +ve so P&Q will repal due to same change so Q as +ve and R as -ve they will be attractve froce
hope this will help you plz as me as brainlist

Answer 2

Answer:

The type of force developed between two charged rod could either be attractive or repulsive, the charge between given Q and R will be –

As we know that for attraction between two charges, the rod must be of different charges. Thereby assume that rod P has positive charge and rod R has negative charges.  

Now for P which we have taken as positive is repelling rod Q. therefore for the repulsion, charges must be similar.

Thereby, rod P and rod Q must have similar charges as positive.

This is because of the assumption then that charged on rod P be positive and rod R be negative and that of rod Q be positive, i.e. the rod Q and R will attract each other and has attractive force between them.