Define resistance and explain its effect on a light bulb in a circuit

Resistance and its Effect on Light Bulb

Resistance is the opposition to the flow of current in an electrical circuit. It is measured in Ohms (Ω) and represents the difficulty for electrons to pass through a conductor. A higher resistance value means more opposition to the flow of current.

Effect of Increased Voltage with Same Resistance on Light Bulb

If the voltage in a circuit is increased while the resistance remains the same, the light bulb connected to the circuit would glow brighter. This is due to the direct relationship between voltage, current, and resistance in Ohm's law (V = IR).

Answer:

The light bulb would glow brighter.

Explanation:

Resistance is the opposition to current flow and in Ohm's law is represented as a constant in the equation V = IR with V the voltage, I the current, and R the resistance.

Now let's assume we are in a series circuit that has only one path for electricity to follow to better explain what would happen to a light bulb if the voltage increased but the resistance stayed the same. Based on Ohm's law equation, the voltage is directly proportional to the current and the resistance is constant. An increase in the voltage is therefore an increase in the current which flows through the light bulb making it glow brighter, while a decrease in voltage results in a decrease in current flowing through the light bulb making it dim.