posted by Kathy .
You are at the center of a current-carrying solenoid (#1). You are experiencing a magnetic field B1. You replace this solenoid with a different solenoid (#2). The length of this replacement (#2) is double of (#1) with double as many turns of (#1). You will experience a magnetic field of ( )due to this replacement solenoid (#2).
You might be able to use some of the following links:
THE CURRENT CARRYING COIL IS CALLED SOLENOID