If the current in a wire is doubled, how does the magnetic field at a point near
Practice Questions
Q1
If the current in a wire is doubled, how does the magnetic field at a point near the wire change?
It remains the same
It doubles
It quadruples
It halves
Questions & Step-by-Step Solutions
If the current in a wire is doubled, how does the magnetic field at a point near the wire change?
Correct Answer: Magnetic field doubles.
Step 1: Understand that a wire carrying electric current creates a magnetic field around it.
Step 2: Learn about the Biot-Savart Law, which states that the magnetic field created by a current is directly related to the amount of current flowing through the wire.
Step 3: Recognize that if the current in the wire is increased (for example, doubled), the strength of the magnetic field will also increase.
Step 4: Conclude that if the current is doubled, the magnetic field at a point near the wire will also double.
