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How is the torque on a loop of current in a magnetic field determined when considering the interactions between the magnetic field and the current loop?
The torque on a loop of current in a magnetic field is determined by the interactions between the magnetic field and the current loop. This torque is calculated using the formula x B, where is the torque, is the magnetic moment of the loop, and B is the magnetic field strength. The direction of the torque is perpendicular to both the magnetic moment and the magnetic field.
How does electric current flow in the b connection?
Electric current flows in the b connection due to the movement of electrons from the negative terminal to the positive terminal of the power source. This flow of electrons creates a closed loop circuit, allowing the current to pass through the b connection and power the device or component it is connected to.
What is the formula for calculating the magnetic flux through a loop?
The formula for calculating the magnetic flux through a loop is given by B A cos(), where is the magnetic flux, B is the magnetic field strength, A is the area of the loop, and is the angle between the magnetic field and the normal to the loop.
How uniform is magnetic field in current loop?
A current loop, by itself, does not produce a very uniform magnetic field. People use a Maxwell coil, Helmholtz coil, or a long solenoid, when they want a relatively uniform magnetic field. What is the magnetic field in a current loop? There are two magnetic fields in a current loop. There is the magnetic field caused by the current, such as what is found in a straight wire, and is given by B=ui/2pr where B is the magnetic field; u is the permeability constant; i is the current; p is pi; r is the radial distance from the wire. If the wire is now circular and has a radius R, then one can calculate the magnetic field inside the wire loop. Granted this is complex, but this is the idea. The second field is perhaps a little bit more practical, but really never discussed. One can solve this problem by assuming a vector A, the current density, then take the curl of vector A, and this is the magnetic field inside the current loop. The question is what is the vector A? The current density vector inside the loop is the product ir/R and a unit vector function representing a circle. This current density is only valid for r less than or equal to R. Here the r is measured from the center of the circle. For r greater than or equal to r, the current density is the product iR/r and the unit vector function representing a circle. This is complicated by the selection of the coordinate system representing the circle. My preferance is to use spherical coordinates, but most books use Cartesian coordinates, and as such the expressions are complicated i.e., r in spherical coordinates is r but in Cartesian coordinates is (x^2+y^2+z^2)^1/2. I hope this gives some insight to the question. I do have a solution in spherical coordinates, but cannot furnish it because of my inability to use greek letters.
What is hall effect?
If a semiconductor carrying a current ( I ) is placed in a transverse magnetic field ( B ), an electric field ( E ) is induced in the direction perpendicular to both I & B.This is called hall effect.for full explanation visit http://www.ecematerials.com/2013/07/hall-effect.html
How is the torque on a loop of current in a magnetic field determined when considering the interactions between the magnetic field and the current loop?
The torque on a loop of current in a magnetic field is determined by the interactions between the magnetic field and the current loop. This torque is calculated using the formula x B, where is the torque, is the magnetic moment of the loop, and B is the magnetic field strength. The direction of the torque is perpendicular to both the magnetic moment and the magnetic field.
Why cannot the B-field of an infinitely long straight current-carrying conductor have a component in the direction of the current?
As induced magnetic lines exist in a plane perpendicular to the direction of flow of current, the component in the direction of current i.e cos 90 component will be zero. Recall cos 90 = 0. Hence the answer
What is the definition of direct current?
(a) A current flowing in one direction only; -- distinguished from alternating current. When steady and not pulsating a direct current is often called a continuous current. (b) A direct induced current, or momentary current of the same direction as the inducing current, produced by stopping or removing the latter; also, a similar current produced by removal of a magnet.
What is the Hall effect?
If a semiconductor carrying a current ( I ) is placed in a transverse magnetic field ( B ), an electric field ( E ) is induced in the direction perpendicular to both I & B.This is called hall effect.for full explanation visit http://www.ecematerials.com/2013/07/hall-effect.html
What are the Example each for self induced and mutually induced emf?
if an emf is induced in a coil due to the current flowing through itself is called SELF INDUCTANCE. on the other hand if an emf is induced on another coil due to the current flowing through the previous coil then it is called MUTUAL INDUCTANCE. suppose there are two coils A and B a current is flowing through A. now if the flux produced due to this current induce an emf on the same coil A, then it is SELF INDUCTANCE, and if it produce emf on B, then it is MUTUAL INDUCTANCE due to coil A.
What is inducing voltage?
Induced voltage happens through induction. When a wire goes through a magnetic field a voltage is induced across its ends. The basic equation is Ampere's law: Curl E = dB/dt at every point, where E is the electric field and B the magnetic flux density. For a loop of wire Stokes's theorem can be applied to this: Integral E.dl = d/dt of the surface integral of B.dS which says that the induced voltage along the loop equals the rate of change of the magnetic flux linking the area of the loop.
What is iron loss of the transformer?
'Iron losses' is the name given to the combination of hysteresis losses and eddy-current losses, which occur in the core of a transformer.Hysteresis losses are energy losses associated with the continual magnetisation and demagnetisation of the core, as characterised by the core's B-H* loop -the larger the area of this loop, the greater the losses.Eddy-current losses are energy losses due to circulating currents resulting from voltages induced into the core by the windings.[*B = flux density expressed in teslas; H = magnetic field strength expressed in amperes per metre.]
Can you use DC current in induction heating?
Induced voltage happens through induction. When a wire goes through a magnetic field a voltage is induced across its ends. The basic equation is Ampere's law: Curl E = dB/dt at every point, where E is the electric field and B the magnetic flux density. For a loop of wire Stokes's theorem can be applied to this: Integral E.dl = d/dt of the surface integral of B.dS which says that the induced voltage along the loop equals the rate of change of the magnetic flux linking the area of the loop.
What is mutual induced emf?
The property of one coil due to which it oposses the change of current in the other coil is called mutual inductance b\w two coil.
How does electric current flow in the b connection?
Electric current flows in the b connection due to the movement of electrons from the negative terminal to the positive terminal of the power source. This flow of electrons creates a closed loop circuit, allowing the current to pass through the b connection and power the device or component it is connected to.
What is the difference between finite open loop gain and closed loop gain?
In a closed loop system the gain without the feed back loop being closed is called open loop gain!!! e.g if forward gain is "A" and feed back factor is "B" then open loop gain is "AB" and closed loop gain will be [A/(A+B)]
How do you terminate in C language a loop?
The keyword "break" will immediately terminate the enclosing loop. Otherwise using conditions in the loop will terminate the loop once the condition becomes false. eg int i = 0; int b =0; for(i ; i < 3; i ++){ b++; } Will increment i and b on each iteration. The loop will terminate when i >= 3 (when the condition i < 3 becomes false).
