A long solenoid has 108 turn cm and carries current i . An electron moves within the solenoid in a circle of radius 6.6 cm perpendicular to the solenoid axis. The speed of the electron is 0.0460c (c = speed of light). Find the current in the solenoid in Ampere.

An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.215 T. If the kinetic energy of the electron is 4.20 × 10-19 J, find the speed of the electron and the radius of the circular path. (a) the speed of the electron m/s (b) the radius of the circular path μm

AY R R/2|; d A single current-carrying circular loop of radius R = 8.8 cm is placed next to a long straight wire as shown in Figure. A current i1 = 7.2 A is passing through the wire towards right. At a certain moment an electron is moving at a velocity v = 700.0 jm/s toward the centre of the circular wire. At the instant shown in figure, the electron's distance from the wire is d — 2.1ст. The z axis points out of the page in the coordinate system shown in the figure which is represented by the circle with a dot inside. a) Compute the magnitude of the magnetic field at the centre c due to the current passing through the straight wire.

An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.280 T. If the kinetic energy of the electron is 2.60 x 10-19 J, find the speed of the electron and the radius of the circular path. (a) the speed of the electron X Your response differs from the correct answer by more than 10%. Double check your calculations. m/s (b) the radius of the circular path X Your response differs from the correct answer by more than 10%. Double check your calculations. μm

An electron passes through a point 3.89 cm from a long straight wire as it moves at 33.9% of the speed of light perpendicularly toward the wire. At that moment a switch is flipped, causing a current of 14.7 A to flow in the wire. Find the magnitude of the electron's acceleration a at that moment.

A solenoid in your car is 36 cm long and has a diameter of 7.9 cm. It is made of copper wire with a radius of 0.50 mm. The turns are closely packed and form a single layer. Assume the resistivity of copper is 1.68 ✕ 10−8 Ω · m. (a) When the solenoid is connected to your battery with E  = 11.6 V, what is the magnetic field inside the solenoid? (Enter the magnitude.)  T

A straight wire in a magnetic field experiences a force of 0.032 N when the current in the wire is 1.5 A. The current in the wire is changed, and the wire experiences a force of 0.074 N as a result. What is the new current?

MYMIVIVH uns w pui SIVIN IN WEHE saw piwa ISMIMIN 29. An electron is travelling at 100 km/s parallel to a long straight horizontal conductor a distance of 3.00 cm from the conductor. A current of 12.0 A runs through the wire as the electron travels parallel to it, in the same direction as the electron's velocity. Find the strength of the external electric field that will prevent the elec- tron from deviating from its original path. Express your answer in V/m.