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Charging by conduction is a method where two objects exchange charge through direct physical contact. Imagine having a balloon that you've rubbed against your hair – it's now negatively charged.

When you touch this balloon to a neutral metal sphere, the excess electrons from the balloon will move to the sphere, attempting to spread out and reduce the concentration of charge. This process will continue until both objects reach a charge equilibrium – both having the same amount of excess charge.

This method is a bit like pouring water from one glass to another until their levels are the same. The key takeaway here is that conduction requires physical touch, and it ends with both objects sharing a similar charge.

Charging by induction, on the flip side, is like doing magic – creating charge without even touching! Let's say you bring the same negatively charged balloon close to our neutral metal sphere, but without touching it.

The electrons on the near side of the sphere are repelled due to the balloon's negative charge, causing them to move to the far side of the sphere. This separation of charges creates a positive side and a negative side within the sphere – a process known as polarization.

By grounding the far side, electrons can leave the sphere, leaving a net positive charge when the ground is removed. What's fascinating here is that the sphere ends up with a charge opposite to that of the balloon – and all of this happens without any direct touch!

You might be wondering how these charges move. Well, it's all about the electrons — little subatomic particles with a negative charge that are part of every atom.

Think of electrons like tiny workers that can jump from one place to another. In conductive materials, such as metals, these workers (electrons) move freely, carrying their negative charge with them. This is why when you charge by conduction the electrons march from one object to the other.

In induction, the electrons still move within the object, but they're more like scaredy-cats running away from the balloon's charge – they don't leave their home (the object).

Charge redistribution is essentially the reorganization of electric charges within an object. This is a common theme in both charging by conduction and induction.

In conduction, the charges redistribute themselves evenly across both objects because they are seeking a peaceful state of equilibrium after the direct transfer.

Induction's redistribution is a bit more strategic – like when a charged object causes the 'home team' electrons to relocate to another side of the object. The resolution here is careful, ensuring that one side becomes positive while the other side retains the excess negative troops. It’s redistributing without mixing, separating the charges to different 'neighborhoods' within the object.