assuming a current is flowing, what increases the strength of the magnetic field of a coiled electrical…

assuming a current is flowing, what increases the strength of the magnetic field of a coiled electrical wire?\nstraightening the wire\nchanging the direction of the current flow\nadding more coils to the wire\nstopping the current
Answer
Brief Explanations:
The strength of the magnetic field of a coiled electrical wire (solenoid) is directly proportional to the number of coils when current is flowing. Straightening the wire reduces the magnetic - field strength as it disrupts the coiled structure. Changing the direction of current flow changes the direction of the magnetic field, not its strength. Stopping the current results in no magnetic field. Adding more coils increases the magnetic - field strength.
Answer:
adding more coils to the wire