Suppose that a car skids 15 meters if it is moving at 50 kilometers per hour Acceleration-Velocity-Position when the brakes are
applied. Assuming that the car always has the same contstant deceleration, how far (in meters) will it skid if it is moving at 100 kilometers per hour when the brakes are applied?.
1 answer:
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Answer:
Explanation:
Given
Charge of first Particle
Charge of second Particle
distance between them
magnetic field due to first charge at mid-way between two charged particles is
(away from it)
Electric field due to
(towards it)
(away from first charge)
(1) Doubling of the current through the wire will result in doubling of its magnetic field.
The magnetic field around a wire is a function of the current I and radial distance r
(with mu denoting the magnetic permeability of the medium). So, B is directly proportional to I. The field magnitude will double with the doubled current from 5A to 10A
(2) Using the same formula as in (1), we can see that the magnetic field is inversely proportional to the radial distance from the wire. So, a particle at 20cm will experience half the magnitude compared to a particle at 10cm.
(3) Answer
If a particle with a charge q moves through a magnetic field B with velocity v, it will be acted on by the magnetic force
So, a particle with charge -2uC will experience a magnetic force of same magnitude but opposite direction (and perpendicular to B) as compared to a particle with a charge of 2uC