A hanging Slinky toy is attached to a powerful battery and aswitch. When the switch is closed so that the toy now carriescurrent, does the Slinky compress or expand?

Q: List down 5 famous people who has a major contributions to Electromagnetism.

A: Following are the five famous people with great contribution in electromagnetism :-   1. André-Marie…

Q: Name the material used for making the armature of an electric bell. Give a reason for your answer.

A: The material used for making the armature of an electric bell is soft iron which can induce…

Q: Which of the following does not induce magnetism on an iron nail?  hammering the nail  touching it…

A: hammering the nail is not responsible for magnetism.

Q: !. Magnetic Phenomena were first discovered at least ____________ years ago in fragments of…

A: Magnetism is a phenomenon associated with magnetic fields that form as a result of the motion of…

Q: 14. One pole strength is doubled and the other is halved, then the force between them is a.…

A: Force (F) = μoqmqm/(4πr2) .....(1) When one pole strength is doubled and other is halved than F =…

Q: A construction worker places a compass at various positions on a wall until the compass needle…

A: We know that a current carrying conductors produce magnetic field. Since is compass is constructed…

Q: What happens to the length of a suspended spring when a current passes through it?

A:

Q: Discuss the Sources of Para-magnetism and the origin of permanent magnetic moments

A: Para-magnetism is a form of magnetism, where the materials (para-magnetic materials) are weakly…

Q: Can I ask if I'm doing it right? Can I drew my circuit like this? (See photos below)

A: In both solutions, the resistances are in series.

Q: When a current is passed through a helically coiled spring, the spring contracts as if it’s…

A: Two parallel conductors carrying current in the same direction will attract each other and two…

Q: In a retardation test on a dc motor, with its field normally excited, the speed fell from 1,525 rpm…

A: Given, Speed = 1525 rpm , 1475 rpm Time = 25 seconds

Q: Give some examples of ferromagnetic materials?

A: Ferromagnetic materials are materials that, in the absence of an external magnetic field, exhibit an…

Q: amplitude

A:

Q: suppose you fall from a bridge and manage to grab on high voltage power line halting your fall.…

A: When a person hangs from a low voltage line, there is no potential difference between the ground and…

Q: Does the voltage output increase when a generator is made to spin faster? Defend your answer.

A: Given: Voltage output

Q: Same situation as in the previous two problems this time the magnet s mass is 4.19 kg and the…

A:

Q: A compass needle is not always balanced parallel to theEarth’s surface, but one end may dip…

A: Earth's magnetic field is not always parallel to the surface of the Earth.

Q: if you could put many magnets together, do you think the magnetic force will be stronger or weaker?

A: YES  , magnetic force will be stronger by putting many magnets together.

Q: The equal and opposite forces acting on a current loop in a magnetic field form what is called a…

A: To show: the resultant torque ia the product of one of the forces and the perpendicular distance…

Q: Why is it critical to keep cable clutter to a minimum in a rack?

A: Introduction: Organizing the cables in a rack is an art that defines the creativity of the…

Q: What is the force effect in the body? * Electrical force Dynamic force Static force O O

A: Force effect in the body cause dynamic force

Q: A rupee coin rolling along a line will have which degree of freedom?

A: When a coin is rolling along a line , it will have following degrees of freedom.While rolling, it…

Q: The region of no attraction(zero force) in a magnet is Select one: O a. at both the ends of the…

A: The  force is zero means the resultant magnetic field is zero at that point.

Q: What is the nature of relationship between force and length of wire?

A: Given : Asked a question regarding the nature of relationship between force and length of the wire.

Q: what is self-induction?

A: Recall consider a coil of N turns and current i is flowing through it.

Q: Gaps need to be left in lengths of railway lines to prevent buckling in hot weather Select one: O…

A: Metals have a tendency to expand when heated and contract when cooled. In hot weather, the railway…

Q: A wire is stretched between two poles 28.0m apart. A sign is attached at the midpoint of the wire…

A:

Q: Elena has two magnets. She puts one under a piece of paper. She holds the other above it. The…

A: The bar magnet consists of North Pole and a south pole. The magnetic field emerges from North Pole…

Q: This time the magnet has mass 6.15 kg in the force pulling into the right is 114.6 N. When the…

A:

Q: How does a magnet excerpt a force without touching another object?

A: A magnet create magnetic field in its surrounding , when other magnet comes in this region  it feel…

Q: Based on my experience on magnetism experiment, if an iron piece is placed in a magnetic field, the…

A: Iron is the metal which shows the ferromagnetic properties, therefore it is a Ferromagnetic…

Q: What is simple manometer and differential manometer?

A: A simple manometer consists of a glass tube having one of its ends connected to a point where…

Q: How magnetic field act as a centripetal force or centrifugal force?

A:

Q: onvert the units below. a) 10 rad = ....... rev., b) 2

A: Radian is defined as the ratio of arc length to radius of the circle. It is a measure of angle.…

Q: the weight of the 36-in. connecting rod is negligible.

A:

Q: A hanging Slinky® toy is attached to a powerful battery and a switch. When the switch is closed so…

A: The slinky will compress

Q: A rigid square of loop of side 'a' and carrying current l2 is lying on a horizontal surface near a…

A:

Q: Same situation as in the previous two problems this time the magnet s mass is 3.94 kg and the…

A:

Q: The blades of fan continue to rotate even when the current is switched off?

A: