Physics 2025 Semester 2 Final (cox)

Front

What is Voltage?

Back

Voltage is the electric potential difference between two points in a circuit, measured in volts (V). It is the force that pushes electric charges through a conductor.

Front

How are multimeters connected to measure voltage?

Back

Multimeters are connected in parallel with the component you are measuring to accurately measure the voltage across it.

Front

What is the formula to calculate gravitational acceleration (g) on Earth?

Back

g = (G * Me) / (Re^2), where G is the gravitational constant, Me is the mass of the Earth, and Re is the radius of the Earth.

Front

What is the value of gravitational acceleration (g) on Earth?

Back

The value of gravitational acceleration (g) on Earth is approximately 9.8 N/kg.

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 is expressed as V = I * R.

Front

How do you calculate voltage using Ohm's Law?

Back

Voltage (V) can be calculated using the formula V = I * R, where I is the current in amperes and R is the resistance in ohms.

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that mass can neither be created nor destroyed in a chemical reaction.

Front

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

Back

The relationship is defined by Ohm's Law: V = I * R, where V is voltage, I is current, and R is resistance.

Front

What happens to the brightness of bulbs in a series circuit compared to a parallel circuit?

Back

In a series circuit, bulbs are dimmer because the voltage is divided among them, while in a parallel circuit, each bulb receives the full voltage, making them brighter.

Front

What is the unit of measurement for resistance?

Back

The unit of measurement for resistance is the ohm (Ω).