Question

Чему равна сила тока в проводнике длиною 2 м, если во время перемещения его в однородном магнитном поле с индуктивностью 50 мТл на расстояние 0,4 м исполняется работа 0,14 Дж? Направление перемещения перпендикулярно к направлению поля и тока. Проводник размещен под углам 45 * к направлению поля.

Answer 1

A=F*S*cosa=I*B*L*cosa*S
I=A/B*L*cosa*S
I=0,14/50*10^-3*2*0,71*0,4=0,005 A=5 мА

Answer 2

Calculation of Current in the Conductor

To calculate the current in the conductor, we can use the formula for work done by a magnetic field on a moving charge:

Work done (W) = Force (F) × Distance (d) × Cosine of the angle between the force and displacement (θ)

In this case, the force is the magnetic force acting on the conductor due to the magnetic field, and the distance is the displacement of the conductor in the magnetic field.

Given: - Length of the conductor (d) = 2 m - Magnetic field induction (B) = 50 mT (millitesla) = 0.05 T - Distance of displacement (d) = 0.4 m - Work done (W) = 0.14 J - Angle between the displacement and the magnetic field (θ) = 45 degrees

Using the formula mentioned above, we can rearrange it to find the force:

Force (F) = W / (d × Cos(θ))

Substituting the given values:

Force (F) = 0.14 J / (0.4 m × Cos(45°))

Now, we can calculate the force using the given values.