Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
THE MAGNETIC CIRCUIT
In an electric circuit, a current is established due to the existence of an electromotive force. In the same way, in a magnetic circuit, a flux is established due to the existence of a magnetomotive force. The mmf is produced by the current flowing in the coil and its value is the product of the current and the number of turns on the coil.
Magnetomotive Force = Current x Number of Turns on the Coil
Note that, although mmf is quoted in ampere turns, the actual unit dimension is in amperes.
MAGNETISING FORCE
The magnetomotive force can be expressed in terms of the length of the magnet. It is then referred to as the magnetising force or magnetic field strength and given the symbol H. The magnetising force is a measure of the intensity of the magnetic effects at any given point in the magnetic field.
Magnetising Force (H) = Magnetomotive Force / Length of magnet
Note that:
• The unit of field strength is ampere per metre, although it may be quoted as ampere turns per metre.• The length of a solenoid ‘l', is the length along its axis and not the length of wire from which the solenoid is made.
It will therefore be seen that a solenoid having 10 turns per metre carrying a current of 6A (10* 6 = 60 ampere/metre) will produce the same strength of magnetic field as one of 12 turns per metre carrying 5A (12 *5 = 60 ampere/metre).
Given the following image, 1 2 1 1 2 0 0 1 5 1 0 1
A sensitive beam balance The materials required for this balance contain a clothes peg, a knitting needle about 12 in. long, two pins or needles and a support like as a milk bo
The wave nature of light is demonstrated by which of the following a) The photoelectric effect b) Colour c) The speed of light d) Diffraction Ans: The w
filled observation of youngs modulus using searles apparatus?
Volume of Solid Ring A solid sphere is bored out such that the radial axis of the removed cylinder passes through the centre. The ring of remaining material stands 6 centimetre
Determine and plot the ratios μtr/μ and μab/μ from 5 keV to 100 MeV for (a) air, (b) water, (c) muscle, (d) bone, and (d) lead. Use the excel data file and use lo
a) A positive point test charge q 0 is placed at the midpoint p among the two equal positive charges q. What forces acts on it at or near this point p? b) Two charges 1X10 -
Get an expression relating T and V in an adiabatic reversible expansion of a gas obeying the equation of state PV = nRT.
Is stone take longer for the downward motion than for the upward motion Consider a stone thrown vertically upward. if we take friction against air into account, we see that the
Define Poisson Distribution in Ideal Gas? Consider a monatomic ideal gas of total Ñ molecules in a volume V ˜ Show that the probability, P N for the number N of mole
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd