The circuit shown uses two identical springs to support a W=10cm long horizontal wire with a mass of 5 g. A current is driven through the wire by a 12-Volt battery and a resistor R=40. In the absence of a magnetic field, the weight of the wire causes the springs to stretch a distance of 0.2 cm each. When a uniform magnetic field B is applied (normal B to the page), the strings are observed to stretch by an additional 0.5 cm. What is the intensity of the magnetic flux density B? support www Hy R V O O springs (•)

The circuit shown uses two identical springs to support a W=10cm long horizontal wire with a mass of 5 g. A current is driven through the wire by a 12-Volt battery and a resistor R=40. In the absence of a magnetic field, the weight of the wire causes the springs to stretch a distance of 0.2 cm each. When a uniform magnetic field B is applied (normal B to the page), the strings are observed to stretch by an additional 0.5 cm. What is the intensity of the magnetic flux density B? support www Hy R V O O springs (•)

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 3RQ

See similar textbooks

Similar questions

The principle operation of LVDT is based on the variation of Select one a. Self inductance b. Reluctance c. Mutual inductance d. Permanence
Reluctance in a magnetic circuits corresponds to in an electric circuits. Resistance Current O Voltage Charge
In a certain cast-steel core series magnetic circuit with a 400 turns, 170 At/m, mean length of 0.16 m and 0. 002 square meters cross-sectional area. the value of current to develop a 0.0004 Wb is
3- A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the length of the air gap in the core is 4 cm, and the number of turns on the coil is 100. How much current is required to produce total flux of 0.00052 Weber? (H= 2000, Ho=4.n107). 6 cm 20 cm N = 100 4 cm = lg 6 cm 6 cm 18 cm 12 cm 18 cm 6 ст Depth = 3 cm
Determine the loop currents Ia, I,, and Ic. 100 Ic 100 100 100 100 Ib 55V 100 V la
Magnetic susceptibility para-magnetic materials is? a)105 b)-10-5 c)+10-5 d)10-5 to 10-2
Consider the magnetic circuit shown in figure u = 2000 HO S2 5 cm/ 1\4 cm 5 сm S2 6 cm If S1= 5 cm? and S2 = 10 cm2 then the total reluctance of the circuit will be 6 cm 14 cm S2
uèstion 5 Consider the magnetic circuit in Figure. Assuming that the core u= 1000uo has a uniform cross section of 4 cm N= 400, the flux density in the air gap. 0.2 A L-42 cm 04-0.1 cm 35.4 mwb 605 mwb 70 8 mwb arch
Electromagnetig Theory
magnetic circuits
The magnetic susceptibility of aluminium is 2.1×10-5. The permeability and relative permeability are, respectively?
A magnetic circuit consists of silicon steel 2,500 permeability, of 10 cm length and a cross section of 1.5 sq. cm and an air gap of the same cross section and of 2 cm length. A 1/2 ampere current flows through the 5,100-turn coil. What is the field intensity at the air gap? draw the diagram