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  4. Two long straight parallel conductors are carrying currents i1 and i2 in the same direction. Work done per unit length, when the distance between them is doubled is

Q. Two long straight parallel conductors are carrying currents and in the same direction. Work done per unit length, when the distance between them is doubled is

AP EAMCET AP EAMCET 2018 Report Error

Solution:

Work done

Questions from AP EAMCET 2018

1. Sand is to be piled up on a horizontal ground in the form of a regular cone of a fixed base of radius R. Coefficient of static friction between the sand layers is p. Maximum volume of the sand that can be piled up in the form of cone without slipping on the ground is

2. A body of mass 2 kg thrown vertically upward from the ground with a velocity of reaches a maximum height of 3 in. The work done by the air resistance is_______
(Acceleration due to gravity = )

3. The system of two masses 2 kg and 3 kg shown in the figure is released from rest. The work done on 3 kg block by the force of gravity during first 2 seconds of its motion is

4. Assertion (A) : The velocity of a projectile at a point on its trajectory is equal to the slope at that point.
Reason (R): The velocity vector at a point is always along the tangent to the trajectory at that point.

5. A body is projected from the ground at an angle of with the horizontal. The ratio of the maximum height attained by it to its range is

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