Bin x x x × x X X X x X 5) A metal crossbar of mass m=75 g rides on a pair of long, horizontal conducting rails separated by a distance L=60 cm and connected to a device that applies constant current | = 3A to the circuit, as shown below. A uniform magnetic field is established going into the page, as shown. a) If the coefficient of static friction is μs 0.20, find the minimum field B necessary to start the bar moving. b) In which direction does the bar move? Constant current source X x x x × × ×

Bin x x x × x X X X x X 5) A metal crossbar of mass m=75 g rides on a pair of long, horizontal conducting rails separated by a distance L=60 cm and connected to a device that applies constant current | = 3A to the circuit, as shown below. A uniform magnetic field is established going into the page, as shown. a) If the coefficient of static friction is μs 0.20, find the minimum field B necessary to start the bar moving. b) In which direction does the bar move? Constant current source X x x x × × ×

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.1MCQ: The Ohms law for the magnetic circuit states that the net magnetomotive force (mmf) equals the...

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Concept explainers

Solenoids

A solenoid is a common term for a telephone coil used as an electromagnet. It also refers to any device that uses a solenoid to convert electrical energy into mechanical energy. The device generates a magnetic field from an electric field and uses the magnetic field to produce precise motion. Solenoid valves are often used to change power, such as in-car transmitters or valves, such as in the fuel system.

Question

Bin
×
x
x
×
x
X
X
X
x
X
X X X
5) A metal crossbar of mass m=75 g
rides on a pair of long, horizontal
conducting rails separated by a
distance L=60 cm and connected to a
device that applies constant current | =
3A to the circuit, as shown below.
A uniform magnetic field is established
going into the page, as shown.
a) If the coefficient of static friction
is μs 0.20, find the minimum
field B necessary to start the
bar moving.
b) In which direction does the bar
move?
Constant
current
source
X
x
x
x

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