القوى والمجالات المغناطيسية

Magnetism: Magnetic Forces and Magnetic Fields

قوانين المجالات والقوى المغناطيسية

المقالات في الفئة القوى والمجالات المغناطيسية
الاسم
An alpha particle (q = +3.2 x 10-19 C, m = 6.67 x 1027 kg) is accelerated by a potential difference of 1200 V, and then enters a uniform magnetic field of magnitude 0.25 T, moving at 90° to the field. What is the magnetic force acting on it?
What is the magnetic force between two parallel wires 50 cm long and 10 cm apart, each carrying a current of 100 A in the same direction?
An airplane flying through the Earth’s magnetic field at a speed of 200 m/s acquires a charge of 100 C. What is the maximum magnetic force on it in a region where the magnitude of the Earth’s magnetic field is 5.0 x 10-5 T?
a straight conductor carries a current of 10.0 A through a uniform 0.65 T magnetic field. The magnitude of the force on the conductor is 11.0 N and the angle between the current and the magnetic field is 60.0 degrees. Calculate the length of the conductor
What is the force between two parallel conductors 2.0 cm long, carrying currents of 4.0 A and 10.0 A, that are 25 cm apart in a vacuum?
A conductor 40 cm long has a mass of 15 g and lies in a horizontal position, at a 90° angle to the field lines of a uniform horizontal magnetic field of 0.2 T. What must the current in the conductor be, so that the force on it will support its own weight
A straight wire carries a current of 20 A vertically upward, in a vacuum. An electron moves at a speed of 5.0 x 106 m/s, parallel to this wire but vertically downward, a distance of 10 cm from it. Calculate the magnitude and direction of the force on th
how many turns are required in a 5.0 cm solenoid with 9.82 A flowing through it to generate a magnetic field of 2.0x10^-2 T in its core?
A wire connecting a taillight to a motorcycle batter is 1.0 m long, and is lying perpendicular to the Earth’s magnetic field. If it experiences a force of 6.0 x 10-5 N when carrying a current for 1.5 A, what is the magnitude of the Earth’s magnetic field
What is the current flowing through a straight wire if the magnetic field strength 10 cm from the wire is 2.4 x 10-5 T?

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