The magnetic field due to current in solenoids can be increased by
Correct answer: C. Increasing the current
- A. Increasing the number of turns per unit length
- B. Using a soft iron core
- C. Increasing the current
- D. All of these
Explanation
The magnetic field inside a solenoid is directly proportional to the current flowing through it. Therefore, increasing the current increases the magnetic field strength.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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