An electron circles at a speed of 13000 m/s in a radius of 2.37 cm in a solenoid. the magnetic field of the solenoid is perpendicular to the plane of the electron’s path. the charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. find the strength of the magnetic field inside the solenoid. answer in units of t find the current in the solenoid if it has 39.6 turns/cm.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

+15-35=-20

going in opposite directions

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y