In an electrical circuit, what does increasing the resistance do to the current, assuming voltage is constant?

In an electrical circuit, what does increasing the resistance do to the current, assuming voltage is constant?

• A. Increases the current
• B. Decreases the current
• C. Has no effect on current
• D. Increases power

Answer: (B)

When resistance in an electrical circuit is increased while keeping the voltage constant, the current flowing through the circuit decreases. This relationship is outlined in Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. According to this formula, if the voltage remains unchanged and the resistance increases, the overall current must decrease because the same voltage will be divided among a higher resistance value. This fundamental principle highlights how resistance affects current flow in a circuit, providing a clear understanding of the dynamics between these electrical parameters.

When resistance in an electrical circuit is increased while keeping the voltage constant, the current flowing through the circuit decreases. This relationship is outlined in Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R.

According to this formula, if the voltage remains unchanged and the resistance increases, the overall current must decrease because the same voltage will be divided among a higher resistance value. This fundamental principle highlights how resistance affects current flow in a circuit, providing a clear understanding of the dynamics between these electrical parameters.