Magnetism Essay Type Questions

The magnetic force between two magnetic poles is directly proportional to the product of their pole strengths and inversely proportional to the square of the distance between them.

They are continuous closed loops, do not intersect each other, tend to contract lengthwise, and are stronger at the poles.

The couple acting on a bar magnet is given by the product of the pole strength and the magnetic field strength times the length of the magnet.

<p>The magnetic induction field strength at a point on the axial line of a bar magnet is given by the formula: $B = \frac{\mu_0}{4\pi} \frac{2m}{r^3}$, where $m$ is the magnetic moment of the magnet and $r$ is the distance from the magnet's center.</p> Signup and view all the answers

<p>Kirchoff's laws consist of the Kirchoff's Current Law (KCL) and Kirchoff's Voltage Law (KVL). KCL states that the total current entering a junction is equal to the total current leaving the junction. KVL states that the sum of the electromotive forces (emfs) in any closed loop of a circuit is equal to the sum of the potential drops in that loop.</p> Signup and view all the answers