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Delta² said:its important to notice that the integral contains vector dl and not just the magnitude of dl.
You can view that integral as a sum of vectors where the end of each vector is the start of the next one. We know from vector addition that the sum is the vector that has as start the start of the first vector and end the end of the last vector (for example for 3 vectors AB, BC and CD its easy to se that the vector sum AB+BC+CD=AD). The start of the "first dl" vector is A1 and the end of the "last dl" is B1. Hence that integral is the vector A1B1.
All true, but if you view things as Delta² suggests, you can view that integral as a sum of vectors aligned head to tail. The sum of those vectors, the resultant, is just the line A1B1.Hardik Batra said:From figure you can see than...
The length of wire is greater than 1m.
because A1B1 = 1m. and wire is not straight.
Magnetic force is a fundamental force of nature that is responsible for attracting or repelling objects with magnetic properties.
The magnetic force between two objects can be calculated using the equation F = qvBsin(theta), where q is the charge of the object, v is its velocity, B is the magnetic field, and theta is the angle between the velocity and the direction of the magnetic field.
The strength of magnetic force is affected by the charge of the objects, their distance from each other, and the strength of the magnetic field.
Magnetic force is a force between objects with magnetic properties, while gravitational force is a force between any two objects with mass. Additionally, magnetic force can be attractive or repulsive, while gravitational force is always attractive.
Magnetic force is used in many everyday technologies, such as electric motors, generators, and magnetic resonance imaging (MRI) machines. It is also used in compasses for navigation and in speakers for sound production.