Electricity Review

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) of the conductor. It can be expressed as V = I × R.

Front

What is the unit of resistance?

Back

The unit of resistance is the Ohm (Ω).

Front

What is a conductor?

Back

A conductor is a material that allows the flow of electric current. Examples include metals like copper and aluminum.

Front

What is an insulator?

Back

An insulator is a material that does not allow electric current to flow through it easily. Examples include rubber and plastic.

Front

What is the formula to calculate resistance?

Back

Resistance (R) can be calculated using the formula R = V / I, where V is voltage and I is current.

Front

What happens to current in a series circuit?

Back

In a series circuit, the current remains the same throughout all components.

Front

What happens to voltage in a series circuit?

Back

In a series circuit, the total voltage is the sum of the voltages across each component.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, and the same current flows through all. In a parallel circuit, components are connected across the same voltage source, and the current can split among them.

Front

What is electric charge?

Back

Electric charge is a property of subatomic particles that causes them to experience a force when placed in an electromagnetic field. It can be positive or negative.

Front

What is static electricity?

Back

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