Physics(3)

" MAGNETS AND MAGNETIC CIRCUIT " Please Refer To the Answer Key. Please indicate solution so that I could understand If I'm wrong with my solutions.  THANKYOU!

Please answer 2-4 only. Please put the given, formula and solution.

Determine the direction of the induced current loop for each situation (upward or downward) and the induced magnetic field direction (to the left or to the right)Answer number 3

A)The left hand rule for a coil is such that if you were to hold a coil in your left hand with your fingers pointing in the direction of the electron flow, your thumb would point in the direction of thea) electron flow b) flow lines c) face of the north pole d) none of the above. B) What is a magnetic flux line?a) It is the space around a magnet or the space in which the magnetic forces act.b) It is the magnetic force that has a definite direction at all points along a curved line from the north to south pole.c) It is the ability of a magnetic material to be easily magnetized.d) none of the above C)It is believed that a magnetic material is .........a) consists of a single large magnetic molecule b) is composed of many tiny magnetic molecules c) consists of a single non-magnetic molecule d) none of the above

#28 The correct answer is already highlighted, explain in a very simple way why that is the correct answer. Briefly discuss its concept & provide an illustrative example.

A magnetic field is _______. Select one: A. THE AREA AROUND AN ELECTRIC MOTOR B. THE AREA AROUND AN ELECTRIC WIRE C. THE AREA IN WHICH A MAGNETIC FORCE OPERATES D. ALL OF THE ABOVE

In this Exercise 6 we will explore laws critical to the study of electromagnetism. We will be using Simulation 3 (below) to explore how a moving magnet produces current in a nearby coil of wire.   a. Magnetic field strength decreases as you get farther from the poles of the magnet. Does the flux through the face of the coil change as you move the magnet? Explain your answer. b. Why does the meter needle deflect? Is the deflection in accordance with Lenz’s Law? Justify your answer in terms of Lenz’s law and your above answers.

Please answer it in 30 mins. thank youu write your soln neat and complte

#39 The correct answer is already highlighted, explain in a very simple way why that is the correct answer. Briefly discuss its concept & provide an illustrative example.

Fill in the correct answers. Two like poles within magnetic reach of each other The magnetic force on a bar magnet is strongest at the. they leave the pole. Magnetic lines have pole and enter the. Magnetic field may be also called The unit of magnetic field is or IWebber is the unit to measure and equal lines.

Please answer 4-8 pls.

Answer all the questions with the most detail as possible! Thank you

QUESTION FIVE Figure 5 shows the cross section of Direct Current, mostly referred to as DC Machine. 1 2 NBA D 7 N S 3 5 8 Frame Figure 2 Cross Section of a DC machine Label All the numbered parts and define one of their respective function in the format as illustrated: Label 8: Frame Function: It completes a path of minimal reluctance to the magnetic field.

Energy is stored in the in the form of a magnetic field inside of a magnet but not outside of a magnet. Select one: True False

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a. The unit of field intensity is B. coulomb/m? newtons/m? A. coulomb C. newtons/coulomb D. b. Coulomb's law for the force between electric charges most closely resembles with A. Gauss theorem C. Law of conservation of energy B. Newton's law of gravitation D. Newton's laws of motion C. A region around a stationary electric charge has B. magnetic field D. neither of the two A. electric field C. both electric and magnetic field

#34 The correct answer is already highlighted, explain in a very simple way why that is the correct answer. Briefly discuss its concept & provide an illustrative example.

Asap please

#37 The correct answer is already highlighted, explain in a very simple way why that is the correct answer. Briefly discuss its concept & provide an illustrative example.

a) Sketch the magnetic field created by this current distribution. (Hint: Think of the plane as consisting of infinitely many current- carrying wires. reasoning.) 4. An infinite metal sheet has current flowing through it as shown in the figure below. Also, use symmetry Now imagine that two such current shcets are fixed in place near one another. current into page Current 2 nmps flow drouh enh mod shee ot of page end view b) Sketch the magnetic ficld in all three regions (above, in between, and below the two current. sheets). c) What would the field look like if both current distributions were flowing into the page? * end view

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.________ is a term used to describe a material's ability to retain magnetism. a) Coercive force b) Retentivity c) either "a" or "b" d) neither "a" nor "b" A coercive force is desirable in materials that is intended to be used as temporary magnets. a) low b) high c) extremely high d) any of the above A) Upon what does the electroniagnetic strength of an air-cored coil depend? a) number of turns in the coil b) amount of current flowing through the coil c) both "a" and "b" d) neither "a" nor "b" B) Upon what does the electromagnetic strength of an iron-cored coil depend? a) amount of current flow b) number of turns c) permeability of the core d) all of the above The left hand rule for a coil is such that if you were to hold a coil in your left hand with your fingers pointing in the direction of electron flow, your thumb would point in the direction of the a) electron flow b) lines of flux c) north pole face d) none of the above

When the given bar magnet is placed along the NS line by identifying its poles, the field of bar magnet and the field are earth are aligned parallel and opposite by Select one: O a. by rotating the bar magnet O b. by rotating the earth field Oc. by rotating the drawing board O d. rotating the compass needle

#31 The correct answer is already highlighted, explain in a very simple way why that is the correct answer. Briefly discuss its concept & provide an illustrative example.

#35 The correct answer is already highlighted, explain in a very simple way why that is the correct answer. Briefly discuss its concept & provide an illustrative example.