Subatomic Particles and Electric Forces

This video tutorial explores why some materials conduct electricity while others do not. It delves into the atomic structure of materials and the properties of charges to explain conductivity, resistivity, and non-conductivity. The video discusses how charges interact, the structure of atoms, and the conditions under which electrons can detach from atoms. It compares conductors and insulators, explaining how loosely attached electrons in conductors move under slight force, while insulators require strong forces to move electrons. The video also explains how air acts as an insulator but can conduct electricity during lightning due to high charge accumulation.

What happens when two charges of the same type are near each other?

• They form a new charge.

• They repel each other.

• They remain neutral.

• They attract each other.

Which subatomic particle is positively charged?

• Photon

• Neutron

• Electron

• Proton

What happens to the attraction force between the nucleus and an electron as the distance increases?

• It remains constant.

• It becomes zero.

• It decreases.

• It increases.

Why are metals like copper good conductors?

• They have no electrons.

• They have loosely attached electrons.

• They have tightly bound electrons.

• They have a strong nucleus.

What is the effect of a strong positive charge placed outside an atom?

• Nucleus remains unaffected.

• Nucleus is attracted to it.

• Electrons are pushed away.

• Electrons are pulled towards it.

In a conductor, what happens to loosely attached electrons when a slight pulling force is applied?

• They move in the direction of the force.

• They remain stationary.

• They disappear.

• They move randomly.

What is the main difference between conductors and insulators?

• Conductors have no electrons.

• Insulators have loosely bound electrons.

• Conductors have loosely bound electrons.

• Insulators conduct electricity easily.

What happens to insulators when a strong pulling force is applied?

• Electrons detach and move.

• Nothing happens.

• Electrons remain bound.

• Nucleus detaches.

Why does air act as a conductor during lightning?

• Because of no charge accumulation.

• Because of high charge accumulation.

• Because of neutral charge accumulation.

• Because of low charge accumulation.

What is the role of a battery's positive terminal in a circuit?

• It attracts protons.

• It repels electrons.

• It attracts electrons.

• It remains neutral.