Question

Укажіть відповідність технічних приладів з фізичними явищами, які використовуються в них (1,5 б.) Прилади ЯвищаА. електродвигун1) дія магнітного поля на постійний магніт Б. компас 2) дія магнітного поля на рухомий електричний зарядВ. гальванометр3) дія магнітного поля на провідник зі струмомГ. МГД – генератор ​

Answer 1

Ответ:

А-3, Б-1, В-3, Г-2

ттттттьтттттттттт т

Answer 2

Correspondence between Technical Devices and Physical Phenomena

1. Electric Motor: The electric motor utilizes the interaction between a magnetic field and a current-carrying conductor to generate mechanical motion. When an electric current flows through a wire placed in a magnetic field, a force is exerted on the wire due to the interaction between the magnetic field and the current. This force causes the wire to move, resulting in the rotation of the motor's shaft. The principle behind the electric motor is based on the phenomenon of the magnetic field's action on a permanent magnet. [[1]]

2. Compass: A compass is a device that utilizes the interaction between a magnetic field and a movable electric charge to determine the direction of the Earth's magnetic field. The compass needle, which is a small magnet, aligns itself with the Earth's magnetic field lines. This alignment allows the compass needle to point towards the Earth's magnetic north pole. The phenomenon involved here is the action of a magnetic field on a movable electric charge. [[2]]

3. Galvanometer: A galvanometer is an instrument used to detect and measure small electric currents. It operates based on the principle of the interaction between a magnetic field and a current-carrying conductor. When an electric current passes through a coil of wire in a magnetic field, a torque is exerted on the coil, causing it to rotate. The rotation of the coil is proportional to the current flowing through it. The galvanometer utilizes this phenomenon to measure the magnitude of electric currents. [[3]]

4. MHD Generator: MHD stands for Magnetohydrodynamic. An MHD generator is a device that converts the kinetic energy of a flowing fluid into electrical energy using the interaction between a magnetic field and the conductive fluid. In an MHD generator, a conductive fluid, such as a plasma or ionized gas, is passed through a magnetic field. The interaction between the magnetic field and the moving charged particles in the fluid induces an electric current, which can be extracted as electrical power. The phenomenon involved here is the action of a magnetic field on a conductor carrying a moving electric charge. [[4]]

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