If the resistance of a conductor is doubled while the voltage remains constant,
Practice Questions
Q1
If the resistance of a conductor is doubled while the voltage remains constant, what happens to the current? (2020)
It doubles
It halves
It remains the same
It quadruples
Questions & Step-by-Step Solutions
If the resistance of a conductor is doubled while the voltage remains constant, what happens to the current? (2020)
Step 1: Understand Ohm's Law, which states that Current (I) = Voltage (V) / Resistance (R).
Step 2: Identify that the voltage (V) is constant in this scenario.
Step 3: Recognize that if the resistance (R) is doubled, we can express it as R' = 2R, where R' is the new resistance.
Step 4: Substitute the new resistance into Ohm's Law: I' = V / (2R), where I' is the new current.
Step 5: Compare the new current (I') with the original current (I = V / R).
Step 6: Notice that I' = V / (2R) is half of I, meaning the new current is half of the original current.
Ohm's Law – Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor.
