Why Do Opposite Charges Result from Induction?

[jackdamack10]

Induction --> Positively Charged rod is brought near neutral rod.
Conduction --> Charged rod touches the neutral rod creating a transfer in charge

What I don't understand is that why "Induction" causes the two rods to have opposite charges. Is it because the positively charge rod repels the positive charges of the neutral rod and attracks the negative charge?

thanks

 

[OlderDan]

Induction --> Positively Charged rod is brought near neutral rod.
Conduction --> Charged rod touches the neutral rod creating a transfer in charge

What I don't understand is that why "Induction" causes the two rods to have opposite charges. Is it because the positively charge rod repels the positive charges of the neutral rod and attracks the negative charge?

thanks

Yes to your thoughts on induction. The neutral rod remains neutral, but the average distance between "like charges" is greater than the average distance for the "unlike charges". In a nonconduction rod, the effect is called polarization. The individual mollecules become polarized with the like charges a bit farther away from the charged rod than the unlike charges.

 

[thepatientmental]

Your understanding is correct. Induction occurs when a charged object is brought near a neutral object, causing the electrons in the neutral object to shift and create a separation of charges. In this case, the positively charged rod repels the positive charges in the neutral rod, causing them to move away from the charged rod. This leaves the neutral rod with a net negative charge, as the positive charges have moved away. This is why the two rods end up with opposite charges after induction.