1. A rectangular magnetic core has square cross section of area 20 sqcm. Find the exciting current needed in the coil having 1000 turns wound on the core to create an air – gap flux of 4mWb with an air gap of 2mm. the relative permeability of the core is 1500 -4 cm- çm 2 mm

Q: Chapter 23: Question 7: Suppose a conducting rod is 58.5 cm long and slides on a pair of rails at…

A: Part a) : εind​=9VWe have , induced emf in conducting rod                      εind​=BLvWhere B -…

Q: a 0.8T bar magnet is pushed through a 50.5 turn coli with an area of 0.002m2 in 3.4sec. The

A: Given  No of turns = 50.5  Magnetic field B = 0.8 T Area A = 0.002 m2 Time ∆t = 3.4 sec

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Q: what is th magnetic field of the conductor?

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Q: 6. In a standard lecture demonstration, a loop of wire, with radius a and resistance R, levitates…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Niobium metal becomes a superconductor (with zero electrical resistance) when cooled below 4.5 K.…

A: Given, Tc = 4.5 K Bc = 0.06 T   Permeability of space mo = 1.25664 × 10-6 N/A2

Q: If a 0.8T bar magnet is pushed through a 50.5 turn coli with an area of 0.002m2 in 3.4sec. The…

A: Given that:- No of turns = 50.5  Magnetic field B = 0.8 T Area A = 0.002 m2 Time ∆t = 3.4 sec  We…

Q: The number of turns of a coil with a section of 6cm^2 cm is 50. When the coil is placed in a 0.2T…

A: The torque on a current carrying loop in a magnetic field is

Q: What is the kinetic energy of a particle with a charge of 55 microCoulombs moving with a radius of…

A: The given values are, q=55 μC=55×10-6 Cr=3.7 mm=3.7×10-3 mB=1.9×10-4 Tv=75 m/s

Q: A flat loop of wire consisting of a single turn of cross-sectional area 20.0 cm² is perpendicular to…

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Q: (a) What current through the coil results in a magnetic dipole moment of 3.5 A m²? 1= A (b) What is…

A: When a coil carries current it acts like magnetic dipole. When this dipole is placed in uniform…

Q: How fast (in rad/s) must a 92-turn coil spin in a 0.039 T field to create a peak voltage of 8.3 V?…

A: Given number of turns = N = 92 strength of magnetic field = B = 0.039 T peak voltage = Vmax = 8.3 V…

Q: A solenoid of radius 4.5 cm has 620 turns and a length of 25 cm. a) find its incductance in mH b)…

A: Given:radius of solenoid, r = 0.045 mtotal turns, N = 620 turnslength of the solenoid, l = 0.25…

Q: @) An MRI technician moves his hand from a region of very low magnetic field strength into an MRI…

A: From Faradays law of electromagnetic induction, when magnetic flux through a conductor changes with…

Q: An emf is induced by rotating a 1,228-turn, 10.0 cm diameter coil in the Earth’s 5.00 ×10-5 T…

A: Number of turns, N = 1228diameter, d = 10 cm = 0.10 mTherefore radius R = Magnetic field, B = 5 x…

Q: 3. A uniform magnetic ficld is given by B = btk where b = 0.35 T/s. Find the induced current in a…

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Q: Determine the minimum atomic percentage of Co2+ in a cubic Co2+-ferrite magnetic material that has a…

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Q: A car alternator produces about 14 V peak output to charge the car's 12-V battery.  If the…

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Q: 2. A time-dependent magnetic field is directed perpendicular to a given circular section of a…

A: According  to faraday's law ,changing magnetic flux produces an induced electric field.