Physics · Magnetic Effects of Electric Current

Which of the following statements is true regarding a current-carrying long cylindrical solenoid?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1The magnetic field lines inside the core of the solenoid are perfectly circular loops.
2Increasing the number of turns per unit length increases the magnetic field strength inside the solenoid.✓
3The magnetic field inside the solenoid does not depend on the magnitude of the current.
4Increasing the resistance of the wire increases the magnetic field strength inside the solenoid.

Correct answer

Increasing the number of turns per unit length increases the magnetic field strength inside the solenoid.

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