Define Coercivity And Retentivity.

Q: Why will dropping an iron magnet on a hard floor make it a weaker magnet?

A: The magnetism property of a piece of iron is depends upon the the alignment of domains. When the…

Q: What does the term ‘attenuation’ used in communication system mean?

A: In a communication system, the term 'attenuation' is a loss of energy.

Q: What is magnetic flux?

A:

Q: A thin ribbon of a silver alloy 2.00-cm wide and 0.0150-mm thick carries a current of 6.98 A…

A: Given value--- Width = 2 cm . thickness = 0.015 mm. current = 6.98 Amp. Hall Voltage = 1.24 × 10-4…

Q: Why is fuse wire fitted in porcelain casing?

A: During short circuit, the current in the circuit increases more than the maximum limit. As a result,…

Q: Name the coil of which the wire is thicker in (i) step up (ii) step down transformer. Give reason…

A: (i) Primary coil is made of thicker wire in step up transformer. This is because,

Q: What are transformers?

A: Transformers are the devices used to increase or decrease the voltage. Type of transformers which…

Q: Electric Motor converts _____ energy to mechanical energy A) sound B) mechanical C) chemical D)…

A: Electric Motor converts _____ energy to mechanical energy A) sound B) mechanical C) chemical D)…

Q: What are the Effects of Electrical Forces on Ion Movement?

A: When an ion is moving or at rest in a electric field it experiences an electric force,  The electric…

Q: Relate the effects of electricity to magnetism how electricity is being produced from magnetic…

A:

Q: How are magnetic fields created?

A: Static Charges can only produces electro static fields.

Q: Why is soft iron used as the core of the electromagnet in an electric bell.

A: The soft iron inside the coil makes the magnetic field stronger because it becomes a magnet itself…

Q: After Galvani's later experiments with two types of metal wire and no known source of electricity…

A: Galvani through his experiments was trying to study the effects of electric sparks on the muscular…

Q: What occurred when you changed the wire gauge to a thicker size? and reducing the wire size to thin?

A:

Q: What does the term ‘demodulation’ in communication system mean?

A: Demodulation is the process of separating some specific information or the signal from the modulated…

Q: Cross-sectional Material Length Resistance area Copper Nichrome 25 m 6.4x10-5m² 50 m 23x10-7m²…

A: Write the expression for the resistance. Here, L is the length and A is the cross-sectional area.

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: What Is the relationship of conductance with conductivity?

A: Conductivity:  Voltage require to set an amount of electrical current to flow is called as…

Q: What is Joule's constant?

A: Joule’s constant shows the relationship between the heat produced and the kinetic energy.it is also…

Q: The ability of material to conduct magnetic flux through it . a. permittivity b. conductivity OC. c.…

A:

Q: hat role do conductors play in modern technology?

A: Conductors are the materials which allow the free flow of electrons from themselves. For example-…

Q: What is an electrical field?

A:

Q: describe and draw a picture of elecstratic conduction

A: Electrostatic conduction is the process of charging a neutral object by keeping a charged object in…

Q: Explain The Van de Graaff Generator?

A: The Van de Graaff Generator is used to draw a very high potential around the spherical ball of the…

Q: What are logic gates?

A: Logic gates are fundamental building blocks of digital systems. They perform basic logic functions.…

Q: What do microphones do?

A: What do microphones do?

Q: H.Wi- Show wither the follow ing Panchion s even evedd or neither の Fu): xう (つ の

A: A function f(x) is an even function if f(-x)=f(x)A function f(x) is an odd function if f(-x)=-f(x)

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

A: Solution-:   Gaps need to be left in lengths of railway lines to prevent buckling in hot weather.…

Q: A5welectrical motor is 80 percent effective. How long does it take to consume 100J? * 5 s 8 s 20s…

A:

Q: What will happen to the current in this purely capacitive circuit as frequency increases?

A: A circuit containing only a source and a pure capacitor is known as a purely capacitive circuit.

Q: Show a picture of how electrical energy improves the lives of the people. It can be a collage.

A: It is required to discuss how electrical energy improves the lives of people.

Q: For a balanced meter bridge, the galvanometer indicates

A: The meter bridge principle is based on the Wheatstone Bridge circuit which says that if at any point…

Q: How do electrical-charge imbalances lead to lightning?

A: Lightning is a phenomena that happens due to imbalance in b/w charges of storm clouds & ground…

Q: Define ampere (amp)?

A: Ampere:

Q: Why do like poles of a magnet repel each other ? What is the name of this particular force?What…

A: Like poles of a magnet repel each other:                              This is because when the two…

Q: How do lightning rods serve to protect buildings from the devastating effects of a lightning strike?

A: The lightning rods divert the charge on the blot to the ground through low resistance pathway…

Q: What is the meaning of the term ‘attenuation’ used in communication system?

A: Attenuation is a general term that refers to any reduction in the strength of a signal. Attenuation…

Q: Describe the Law of conservation of current?

A: This is the law which is known as kirchhoff's first law, state as, " At any junction of the electric…

Q: ween passi switch lase

A: Q switching is a method for generating intense short pulses (sometimes called "giant pulses") of…

Q: what actually causes the current?

A: Electric current is the flow of electric charge through a particular area per unit time. In an…