Question

Sometimes when you push a trolley, you can get a small shock. Explain why this would happen

Answer 1

Explanation :

When pushing a trolley, the occurrence of a small shock can be attributed to static electricity. Static electricity arises from the buildup of an imbalance of electric charge on the surface of objects. This charge accumulation occurs when there is friction or rubbing between different materials.

In the case of pushing a trolley, it is likely that there may be friction or contact between the wheels of the trolley and the ground. This friction can cause the wheels to accumulate electrons, resulting in a negative charge. Simultaneously, the ground may lose electrons, resulting in a positive charge. This charge separation leads to an imbalance of electric charge.

Now, when you touch the metal handle of the trolley, you become a conduit for the excess charge to flow through. As your body is a conductor, the accumulation of electrons on the trolley is balanced by moving through your body to the ground, causing a small electric shock sensation.

The severity of the shock depends on various factors like the amount of charge accumulated, the conductivity of the materials involved, and the conditions (such as humidity) that can affect the build-up of static electricity. Dry conditions or wearing clothing made of certain synthetic fibers can increase static electricity build-up, making shocks more likely.

Answer 2

The most simple answer could be built up static electricity. Friction between the wheels and the ground could build up static electricity. And when something with the opposite charge, like your hand, touches the trolley, all of its static energy quickly jumps from the trolley and into your body. This results in a mild shock. While the shock is usually not harmful, it can be surprising and uncomfortable.

I hope this helped!

~~~Harsha~~~