If the resistance is constant, how will doubling the voltage affect the current drawn?

Prepare effectively for the ETCP Electrical Exam. Explore flashcards, multiple-choice questions, and detailed explanations to ace your certification with confidence!

According to Ohm's law, which states that current (I) is equal to voltage (V) divided by resistance (R), represented by the formula ( I = \frac{V}{R} ), we can analyze the impact of changing the voltage while keeping the resistance constant.

If the resistance is constant and the voltage is doubled, the equation can be reformulated to express the new current as ( I' = \frac{2V}{R} ). This shows that the new current (I') will be twice the original current (I) because the relationship between voltage and current is directly proportional when resistance remains unchanged.

Thus, with the increase in voltage, it directly results in a corresponding increase in current by the same factor of two, confirming that doubling the voltage will indeed double the current drawn through the circuit. This fundamental principle is crucial for understanding electrical systems and designing circuits appropriately.

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