Practicing Success
In a resistor, what happens to the current when the resistance is doubled? |
The current gets tripled The current gets halved The current stops The current gets doubled |
The current gets halved |
The correct answer is option 2. The current gets halved. According to Ohm's Law, the current passing through a resistor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the resistor. Mathematically, Ohm's Law is expressed as: \[I = \frac{V}{R}\] Where: \(I\) is the current (in Amperes) \(V\) is the voltage (in Volts) \(R\) is the resistance (in Ohms) If the resistance (\(R\)) is doubled while the voltage (\(V\)) remains constant, according to Ohm's Law, the current (\(I\)) will be halved. This is because if resistance increases, it impedes the flow of current, resulting in a decrease in current. |