_18) Static and Current 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 causes a balloon to stick to a wall after being rubbed on hair?

Back

The balloon sticks to the wall due to electrostatic forces between the particles of the balloon and the particles of the wall.

Front

True or False: Lightning is a form of static electricity.

Back

True

Front

What happens to an object that becomes positively charged?

Back

An object becomes positively charged by losing electrons.

Front

What type of circuit has components connected end-to-end, so that current flows through each component in turn?

Back

A series circuit.

Front

In a series circuit, how does the brightness of light bulbs compare if they have different resistances?

Back

The light bulb with higher resistance will shine more brightly.

Front

What is current electricity?

Back

Current electricity is the flow of electric charge through a conductor, typically measured in amperes.

Front

What is the unit of electric current?

Back

The unit of electric current is the ampere (A).

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω).

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R): V = I × R.