Which one of the following statement is not correct regarding electric and magnetic field?

بجلی اور مقناطیسی فیلڈ کے بارے میں مندرجہ ذیل میں سے کون سا بیان درست نہیں ہے؟

If current switches direction, so does the magnetic field.

When current pass through a straight wire, magnetic field line is also produced in straight line.

Current flowing-coil has a magnetic field similar to that of a bar magnet.

No current no magnetic field.

Magnetic field lines around a straight current-carrying wire are circular, not straight.

They form concentric circles around the wire as per Right-Hand Rule.