Question: If the current in a wire is doubled, how does the magnetic field at a point 1 meter away change?
Options:
It doubles
It quadruples
It remains the same
It halves
Correct Answer: It doubles
Solution:
The magnetic field is directly proportional to the current, so it doubles.
If the current in a wire is doubled, how does the magnetic field at a point 1 me
Practice Questions
Q1
If the current in a wire is doubled, how does the magnetic field at a point 1 meter away change?
It doubles
It quadruples
It remains the same
It halves
Questions & Step-by-Step Solutions
If the current in a wire is doubled, how does the magnetic field at a point 1 meter away change?
Step 1: Understand that a wire carrying current creates a magnetic field around it.
Step 2: Know that the strength of the magnetic field depends on the amount of current flowing through the wire.
Step 3: Remember that if the current is doubled, the magnetic field strength also changes.
Step 4: Since the magnetic field is directly proportional to the current, if the current is doubled, the magnetic field will also double.
Magnetic Field and Current Relationship – The magnetic field around a current-carrying wire is directly proportional to the current flowing through the wire, as described by Ampère's Law.
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