Electricity (Honors)

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 I = V/R.

Front

What is electrical resistivity?

Back

Electrical resistivity is a measure of how strongly a material opposes the flow of electric current. It is typically expressed in ohm-meters (Ω·m). Materials with high resistivity are insulators, while those with low resistivity are conductors.

Tags

NGSS.HS-PS2-6

Front

What is a conductor?

Back

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

Front

What is an insulator?

Back

An insulator is a material that resists the flow of electric current. Examples include rubber, glass, and plastic.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across common points, allowing multiple paths for current to flow.

Front

What happens in a series circuit if one component fails?

Back

If one component in a series circuit fails (like a light bulb), the entire circuit stops working because the current cannot flow.

Front

What happens in a parallel circuit if one component fails?

Back

If one component in a parallel circuit fails, the other components continue to work because there are multiple paths for the current to flow.

Front

What is the formula for calculating resistance?

Back

Resistance (R) can be calculated using Ohm's Law: R = V/I, where V is voltage and I is current.

Front

What is the unit of electrical resistance?

Back

The unit of electrical resistance is the ohm (Ω).

Front

What is the relationship between voltage, current, and resistance?

Back

According to Ohm's Law, the relationship is defined as V = I * R, where V is voltage, I is current, and R is resistance.