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25 Dec 2020

The field winding of DC electromagnet is wound with 960 turns and has a resistance of when the exciting voltage is 230V, the magnetic flux linking the coil is 0.005Wb. The self inductance of the coil is _

 

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Electricity and Magnetism
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Solving problems based on inductance
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Uttam Saikia
Uttam SaikiaLv10
25 Dec 2020
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A flux of 0.5mWb is produced by a coil of 900 turns on a ring with a current of 3A in it. The mutual inductance between the coils, if a second coil of 600 turns in uniformly wound over the first coil.

 

Heres my question hope someone can help:)

Calculate :

(a) the number of turns required for an inductor to absorb 230V ona 50Hz circuit
(b) the length of airgap required if the coil is to take amagnetizing current of 3A (r.m.s)
(c) the phase difference between the current and the terminalvoltage

Mean length of steel path, 500 mm
maximum flux density in core, 1T
sectional area of core, 3000mm2
maximum magnetic field strength for the steel, 250A/m
core loss, 1.7W/kg
density of core, 7800kg/m3
Neglect the resistance of the winding and any magnetic leakage andfringing. Assume the current waveform to be sinusoidal

A coil of inductance and resistance is connected to a battery of EMF 12V. Find the energy stored in the magnetic field associated with the coil at an instant 10 ms after the circuit is switched on.

 

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