What effect would doubling the voltage have on the electric current in a circuit if resistance is constant?

What effect would doubling the voltage have on the electric current in a circuit if resistance is constant?

• A. It decreases the current
• B. It has no effect
• C. It increases the current
• D. It makes the current fluctuate

Answer: (C)

Doubling the voltage in a circuit with constant resistance directly affects the electric current according to Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. When voltage is increased while resistance remains the same, the current must also increase proportionately. In this context, doubling the voltage means that the current will also double since the resistance is a constant value. This principle demonstrates that there is a direct relationship between voltage and current in a circuit; as one increases, so does the other, provided that resistance does not change. This illustrates the fundamental behavior of electric circuits, making it clear why increasing voltage leads to an increase in current.

Doubling the voltage in a circuit with constant resistance directly affects the electric current according to Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. When voltage is increased while resistance remains the same, the current must also increase proportionately.

In this context, doubling the voltage means that the current will also double since the resistance is a constant value. This principle demonstrates that there is a direct relationship between voltage and current in a circuit; as one increases, so does the other, provided that resistance does not change.

This illustrates the fundamental behavior of electric circuits, making it clear why increasing voltage leads to an increase in current.