If the current in a wire is doubled, how does the magnetic field at a point near the wire change?
Practice Questions
1 question
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
According to the Biot-Savart Law, the magnetic field is directly proportional to the current, so if the current is doubled, the magnetic field also doubles.
Questions & Step-by-step Solutions
1 item
Q
Q: If the current in a wire is doubled, how does the magnetic field at a point near the wire change?
Solution: According to the Biot-Savart Law, the magnetic field is directly proportional to the current, so if the current is doubled, the magnetic field also doubles.
Steps: 4
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.
