Static Electricity

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects, which can result from friction, contact, or induction.

Front

What direction do electric field lines point?

Back

Electric field lines point from positive to negative charges.

Front

What happens when you pull a cotton sweater off your skin?

Back

Electrons are transferred from the skin to the cotton, resulting in the skin acquiring a positive charge and the cotton acquiring a negative charge.

Front

What charge does a glass rod acquire when rubbed with silk?

Back

The glass rod becomes positively charged, and the silk becomes negatively charged.

Front

What is Coulomb's Law?

Back

Coulomb's Law describes the force between two charged objects, stating that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Front

How do you calculate the electric force between two charges?

Back

The electric force (F) can be calculated using the formula F = k * |q1 * q2| / r^2, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

Front

What is the unit of electric charge?

Back

The unit of electric charge is the Coulomb (C).

Front

What is the significance of a negative charge?

Back

A negative charge indicates an excess of electrons in an object.

Front

What is the significance of a positive charge?

Back

A positive charge indicates a deficiency of electrons in an object.

Front

What occurs during the process of charging by friction?

Back

Charging by friction occurs when two different materials are rubbed together, causing electrons to be transferred from one material to the other.