Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

General Knowledge

Question:

In a resistor, what happens to the current when the resistance is doubled?

Options:

The current gets tripled

The current gets halved

The current stops

The current gets doubled

Correct Answer:

The current gets halved

Explanation:

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.

So, the correct answer is: The current gets halved