What effect does increased resistance have on current flow in a circuit?

What effect does increased resistance have on current flow in a circuit?

• A. It increases current flow
• B. It decreases current flow
• C. It has no effect on current flow
• D. It can cause current to flow in reverse

Answer: (B)

In a circuit, increased resistance leads to a decrease in current flow. This relationship is described by Ohm’s Law, which 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. The formula is often represented as I = V/R. When resistance increases while the voltage remains constant, the formula illustrates that current must decrease. Essentially, a higher resistance opposes the flow of electric charge, limiting how much current can travel through the circuit. This concept is fundamental in understanding how electrical circuits operate, affecting everything from basic circuit design to troubleshooting and repair.

In a circuit, increased resistance leads to a decrease in current flow. This relationship is described by Ohm’s Law, which 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. The formula is often represented as I = V/R.

When resistance increases while the voltage remains constant, the formula illustrates that current must decrease. Essentially, a higher resistance opposes the flow of electric charge, limiting how much current can travel through the circuit. This concept is fundamental in understanding how electrical circuits operate, affecting everything from basic circuit design to troubleshooting and repair.