In a circuit, if resistance increases while voltage remains constant, what will happen to the current?

In a circuit, if resistance increases while voltage remains constant, what will happen to the current?

• A. It will increase
• B. It will decrease
• C. It will remain the same
• D. It will double

Answer: (B)

When resistance in a circuit increases while the voltage remains constant, the current will decrease according to Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. This means that if the voltage is held steady and the resistance is increased, the overall current must decrease to maintain that relationship. For example, if you have a constant voltage of 10 volts and your resistance increases from 5 ohms to 10 ohms, the current will drop from 2 amps (10V / 5Ω) to 1 amp (10V / 10Ω). The fundamental principle is that higher resistance limits the flow of electric current, resulting in a reduction of current when voltage does not change. This is a key concept in understanding electrical circuits and the behavior of current in relation to voltage and resistance.

When resistance in a circuit increases while the voltage remains constant, the current will decrease according to Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. This means that if the voltage is held steady and the resistance is increased, the overall current must decrease to maintain that relationship.

For example, if you have a constant voltage of 10 volts and your resistance increases from 5 ohms to 10 ohms, the current will drop from 2 amps (10V / 5Ω) to 1 amp (10V / 10Ω). The fundamental principle is that higher resistance limits the flow of electric current, resulting in a reduction of current when voltage does not change. This is a key concept in understanding electrical circuits and the behavior of current in relation to voltage and resistance.