What is the effect of increasing the distance from a long straight current-carrying wire on the magnetic field strength?
Correct Answer: Magnetic field strength decreases.
- Step 1: Understand that a long straight wire carrying an electric current creates a magnetic field around it.
- Step 2: Recognize that the strength of this magnetic field is strongest close to the wire.
- Step 3: Learn that as you move further away from the wire, the magnetic field strength gets weaker.
- Step 4: Remember that this relationship is described by the Biot-Savart Law, which states that the magnetic field strength decreases with distance.
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