Static Charge

The video explores static electricity, contrasting it with current electricity. It explains how static electricity is generated through friction between nonmetal insulators, leading to charge transfer. Demonstrations include rubbing a plastic rod with a cloth and the effects of charge on everyday objects like hair and balloons. The video also covers induced charge and safety measures to prevent static sparks, especially in fueling scenarios.

What is the main difference between static electricity and current electricity?

• Static electricity involves moving electrons, while current electricity does not.

• Static electricity only occurs in metals, while current electricity occurs in nonmetals.

• Static electricity is a recent discovery, while current electricity has been known for thousands of years.

• Static electricity involves stationary charges, while current electricity involves moving electrons.

What happens when two nonmetal insulators are rubbed together?

• They both become positively charged.

• They both become negatively charged.

• One becomes positively charged and the other negatively charged.

• They remain electrically neutral.

What is observed when two objects with like charges are brought close to each other?

• They repel each other.

• They attract each other.

• They create a spark.

• They become electrically neutral.

How can a charged balloon stick to a wall?

• The balloon's charge induces a similar charge on the wall.

• The balloon's charge induces an opposite charge on the wall.

• The balloon's charge neutralizes the wall's charge.

• The balloon's charge is transferred to the wall.

Why is it important to use an earthing cable when fueling vehicles?

• To prevent fuel from leaking.

• To ensure the fuel flows smoothly.

• To prevent a static spark from igniting the fuel.

• To keep the fuel nozzle clean.