The magnetic induction and the intensity of magnetic field inside an iron core of an electromagnet are `1 Wbm^(-2)` and `150Am^(-1)` respectively. The

The magnetic induction and the intensity of magnetic field inside an iron core of an electromagnet are `1 Wbm^(-2)` and `150Am^(-1)` respectively. The
by

1 Answer

Answer :

The magnetic induction and the intensity of magnetic field inside an iron core of an electromagnet are `1 Wbm^(-2)` and ... (5)/pi` D. `10^(5)/(5 pi)`
by

Related questions

What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field and a magnetic field at right angles to each other D. A wave consisting of two magnetic fields at right angles to each other

Description : What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field ... to each other D. A wave consisting of two magnetic fields at right angles to each other

Last Answer : C. A wave consisting of an electric field and a magnetic field at right angles to each other

What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each other. C. Alternating currents in the core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Description : What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each ... core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Last Answer : B. A wave consisting of an electric field and a magnetic field at right angles to each other.

A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Description : A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Last Answer : Answer: B

What do you call of an instrument that depends for its operation on the reaction between magnetic flux set up by currents in fixed windings and other currents set up by electromagnet induction in movable conducting parts?

Description : What do you call of an instrument that depends for its operation on the reaction between magnetic flux set up by currents in fixed windings and other currents set up by electromagnet induction in movable conducting parts?

Last Answer : induction instrument

Which of the following does not equal the unit of magnetic flux density? a) 1 Wbm-2 b) 1 NA-1m -1 c) Both (a) and (b) d) 1 Wbm-1

Description : Which of the following does not equal the unit of magnetic flux density? a) 1 Wbm-2 b) 1 NA-1m -1 c) Both (a) and (b) d) 1 Wbm-1

Last Answer : d) 1 Wbm-1

In a three-phase, squirrel-cage type, induction motor the rotating magnetic field is established by the _____________. A. current induced in the rotor windings B. application of a three-phase voltage supply to the stator windings C. laminated steel core and aluminum conductors in the rotor D. interaction of the magnetic field caused by the induced current in the squirrel-cage bars with the magnetic field of the stator

Description : In a three-phase, squirrel-cage type, induction motor the rotating magnetic field is established by the _____________. A. current induced in the rotor windings B. application of a three-phase voltage ... caused by the induced current in the squirrel-cage bars with the magnetic field of the stator

Last Answer : Answer: B

Find the magnetic field intensity at the radius of 6cm of a coaxial cable with inner and outer radii are 1.5cm and 4cm respectively. The current flowing is 2A. a) 2.73 b) 3.5 c) 0 d) 1.25

Description : Find the magnetic field intensity at the radius of 6cm of a coaxial cable with inner and outer radii are 1.5cm and 4cm respectively. The current flowing is 2A. a) 2.73 b) 3.5 c) 0 d) 1.25

Last Answer : c) 0

The magnetic field intensity will be zero inside a conductor. State true/false. a) True b) False

Description : The magnetic field intensity will be zero inside a conductor. State true/false. a) True b) False

Last Answer : b) False

What is most suitable for the core of an electromagnet?

Description : What is most suitable for the core of an electromagnet?

Last Answer : Soft iron

1. What is most suitable for the core of an electromagnet? 2. What is common between Kutty, Shankar, Laxman and Sudhir Dar? 3. On which bast is the India’s wage policy? 4. Which is east of the Andaman and Nicobar Islands? 5. Who pioneered Khilafat Movement?

Description : 1. What is most suitable for the core of an electromagnet? 2. What is common between Kutty, Shankar, Laxman and Sudhir Dar? 3. On which bast is the India's wage policy? 4. Which is east of ... 19. Ankaleshwar and Navagaon are two oil fields in which state? 20. What was the capital of Hoyasals?

Last Answer : Answer : 1. Soft iron 2. Drawing Cartoons 3. Cost of living 4. Indonesia 5. Ali Brothers 6. Sand fly 7. 12 8. Lime stone 9. Padma 10. Khan Abdul Ghaffar Khan 11. Journalism 12. ... Bhikaiji Cama 16. 6 months 17. It forms erect, reduced images 18. Increasing steadily 19. Gujarat 20. Dwarasamudra

Core of an electromagnet should have

Last Answer : Core of an electromagnet should have low coercivity, high susceptibility.

In the heating process of the ________type a simple method of temperature control is possible by means of a special alloy which loses its magnetic properties at a particular high temperature and regains them when cooled to a temperature below this value. (A) Indirect induction over (B) core type induction furnace (C) coreless induction furnace (D) high frequency eddy current

Description : In the heating process of the ________type a simple method of temperature control is possible by means of a special alloy which loses its magnetic properties at a particular high temperature and regains ... ) core type induction furnace (C) coreless induction furnace (D) high frequency eddy current

Last Answer : Ans: D Magnetic property of alloy changes with change of the temperature and Heat is produced due to eddy current = i2R and i α f2

Calculate the energy when the magnetic intensity and magnetic flux density are 15 and 65 respectively. a) 755 b) 487.5 c) 922 d) 645

Description : Calculate the energy when the magnetic intensity and magnetic flux density are 15 and 65 respectively. a) 755 b) 487.5 c) 922 d) 645

Last Answer : b) 487.5

How is a magnetic force in an electromagnet created?

Description : How is a magnetic force in an electromagnet created?

Last Answer : An electromagnet uses electricity to create the magnetic field.Moving charges create magnetic fields. Knowing that, if we have alot of copper wire (with a suitable insulator) wrapped around aniron core ... around anail and connecting a battery to the ends of the wire will make asimple electromagnet.

In an electromagnet the magnetic forces increase as increases?

Description : In an electromagnet the magnetic forces increase as increases?

Last Answer : It increases as the current increases.

In an electromagnet the magnetic forces increase as increases?

Description : In an electromagnet the magnetic forces increase as increases?

Last Answer : It increases as the current increases.

True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?

Description : True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?

Last Answer : FALSE

Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Description : Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Last Answer : b.Bar magne

Write the procedure of construction of WBM road with neat sketch showing various components

Description : Write the procedure of construction of WBM road with neat sketch showing various components

Last Answer : Construction Procedure:  a) Preparation of Foundation: The foundation for receiving the layer of WBM may be either the sub-grade or sub-base or base course. The depressions and pot holes on the existing road ... water and rolled. No traffic is allowed till WBM layer sets and dries out. 

State any two merits and demerits of WBM road.

Description : State any two merits and demerits of WBM road.

Last Answer : Merits of WBM roads:  1) If in good condition, it can take a composite traffic of about 900 tonnes per lane per day 2) If WBM surfacing is maintained properly, it is found to have good service ... are permeable to rain water and it leads to the softening and yielding of materials 4) Life is less

Justify the remedial measures for following defects : (i) Formation of pot holes in case of WBM roads. (ii) Formation of ruts in case of earthen roads. (iii)Bitumen bleeding in case of bituminous roads.

Description : Justify the remedial measures for following defects : (i) Formation of pot holes in case of WBM roads. (ii) Formation of ruts in case of earthen roads. (iii)Bitumen bleeding in case of bituminous roads.

Last Answer : The cross section of hill road is shown below: (i) Formation of pot holes in case of WBM roads : The pot holes should be patched up by. (1) Cutting the defective area to rectangular shape and ... spreading a layer of dry coarse sand in a thickness varying 5 mm to 10 mm and rolling the surface. 

The most common type of AC service generator found aboard ship is the stationary _____________. A. electromagnetic field, revolving armature type B. electromagnetic field, oscillatory armature type C. armature, oscillatory electromagnet field type D. armature, rotating electromagnetic field type

Description : The most common type of AC service generator found aboard ship is the stationary _____________. A. electromagnetic field, revolving armature type B. electromagnetic field, oscillatory armature type C. armature, oscillatory electromagnet field type D. armature, rotating electromagnetic field type

Last Answer : Answer: D

Which of the following would be most suitable for making an electromagnet? (a) Copper (b) Tungsten (c) Soft iron (d) Steel

Description : Which of the following would be most suitable for making an electromagnet? (a) Copper (b) Tungsten (c) Soft iron (d) Steel

Last Answer : Ans:(c)

Electromagnet is constructed with which of the following? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Description : Electromagnet is constructed with which of the following? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Last Answer : (2) Soft Iron Explanation: An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. It is made of soft iron since it has the property of losing its magnetism very quickly.

Why is soft iron used as an electromagnet?

Description : Why is soft iron used as an electromagnet?

Last Answer : Ans: Because it remains magnetic only till the current passes through the coil and loses its magnetism when the current is switched off (principle of electric bells)

Electromagnet is constructed with which of the following ? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Description : Electromagnet is constructed with which of the following ? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Last Answer : Soft Iron

The intensity of a magnetic field is defined as the force experienced by which pole? -Do You Know?

Description : The intensity of a magnetic field is defined as the force experienced by which pole? -Do You Know?

Last Answer : answer:

Magnetic field intensity depends on what ?

Description : Magnetic field intensity depends on what ?

Last Answer : The magnitude of a magnetic field depends on the current and distance.

Decibel is used to measure the intensity of - (1) Magnetic field (2) Sound (3) Light (4) Heat

Description : Decibel is used to measure the intensity of - (1) Magnetic field (2) Sound (3) Light (4) Heat

Last Answer : (2) Sound Explanation: The decibel (dB) is used to measure sound level, but it is also widely used in electronics, signals and communication.

What is the intensity of the magnetic field at the earth’s north pole? A. 32,000 nT B. 62,000 nT C. 32,000 µT D. 62,000 µT

Description : What is the intensity of the magnetic field at the earth’s north pole? A. 32,000 nT B. 62,000 nT C. 32,000 µT D. 62,000 µT

Last Answer : B. 62,000 nT

What is the approximate intensity of the magnetic field at the earth’s surface? A. 32,000 nT B. 62,000 nT C. 32,000 µT D. 62,000 µT

Description : What is the approximate intensity of the magnetic field at the earth’s surface? A. 32,000 nT B. 62,000 nT C. 32,000 µT D. 62,000 µT

Last Answer : A. 32,000 nT

Intensity of Magnetic field is–

Description : Intensity of Magnetic field is–

Last Answer : Ampere/meter

The intensity of a magnetic field is defined as the force experienced by which pole?

Description : The intensity of a magnetic field is defined as the force experienced by which pole?

Last Answer : Unit north pole

The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be a) 1.414 b) 1.732 c) -1.414 d) -1.732

Description : The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be a) 1.414 b) 1.732 c) -1.414 d) -1.732

Last Answer : b) 1.732

The line integral of the electric field intensity is a) Mmf b) Emf c) Electric potential d) Magnetic potential

Description : The line integral of the electric field intensity is a) Mmf b) Emf c) Electric potential d) Magnetic potential

Last Answer : b) Emf

Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensity d) Magnetic flux density

Description : Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensit d) Magnetic flux density

Last Answer : d) Magnetic flux density

The total current density is given as 0.5i + j – 1.5k units. Find the curl of the magnetic field intensity. a) 0.5i – 0.5j + 0.5k b) 0.5i + j -1.5k c) i – j + k d) i + j – k

Description : The total current density is given as 0.5i + j – 1.5k units. Find the curl of the magnetic field intensity. a) 0.5i – 0.5j + 0.5k b) 0.5i + j -1.5k c) i – j + k d) i + j – k

Last Answer : b) 0.5i + j -1.5k

Find the magnetization of the material with susceptibility of 6 units and magnetic field intensity of 13 units. a) 2.16 b) 6.2 c) 78 d) 1.3

Description : Find the magnetization of the material with susceptibility of 6 units and magnetic field intensity of 13 units. a) 2.16 b) 6.2 c) 78 d) 1.3

Last Answer : c) 78

The line integral of the magnetic field intensity is the a) Current density b) Current c) Magnetic flux density d) Magnetic moment

Description : The line integral of the magnetic field intensity is the a) Current density b) Current c) Magnetic flux density d) Magnetic moment

Last Answer : b) Current

The normal component of magnetic field intensity at the boundary of separation of the medium will be a) Same b) Different c) Negative d) Inverse

Description : The normal component of magnetic field intensity at the boundary of separation of the medium will be a) Same b) Different c) Negative d) Inverse

Last Answer : a) Same

The tangential component of the magnetic field intensity is continuous at the boundary of separation of two media. State True/False. a) True b) False

Description : The tangential component of the magnetic field intensity is continuous at the boundary of separation of two media. State True/False. a) True b) False

Last Answer : a) True

Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78

Description : Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78

Last Answer : a) 19.09

Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. a) 6 b) -6 c) 0 d) 1

Description : Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. a) 6 b) -6 c) 0 d) 1

Last Answer : b) -6

Find the current when the magnetic field intensity is given by 2L and L varies as 0->1. a) 2 b) 1 c) 0.5 d) 0

Description : Find the current when the magnetic field intensity is given by 2L and L varies as 0->1. a) 2 b) 1 c) 0.5 d) 0

Last Answer : b) 1

The magnetic field intensity of an infinite sheet of charge with charge density 36.5 units in air will be a) 18.25 b) 11.25 c) 73 d) 1/36.5

Description : The magnetic field intensity of an infinite sheet of charge with charge density 36.5 units in air will be a) 18.25 b) 11.25 c) 73 d) 1/36.5

Last Answer : a) 18.25

Find the magnetic field intensity of a toroid of turns 40 and radius 20cm. The current carried by the toroid be 3.25A. a) 103.45 b) 102 c) 105.7 d) 171

Description : Find the magnetic field intensity of a toroid of turns 40 and radius 20cm. The current carried by the toroid be 3.25A. a) 103.45 b) 102 c) 105.7 d) 171

Last Answer : a) 103.45

Find the magnetic field intensity due to a solenoid of length 12cm having 30 turns and current of 1.5A. a) 250 b) 325 c) 175 d) 375

Description : Find the magnetic field intensity due to a solenoid of length 12cm having 30 turns and current of 1.5A. a) 250 b) 325 c) 175 d) 375

Last Answer : d) 375

The magnetic flux density is directly proportional to the magnetic field intensity. State True/False. a) True b) False

Description : The magnetic flux density is directly proportional to the magnetic field intensity. State True/False. a) True b) False

Last Answer : a) True

Find the magnetic field intensity when the current density is 0.5 units for an area up to 20 units. a) 10 b) 5 c) 20 d) 40

Description : Find the magnetic field intensity when the current density is 0.5 units for an area up to 20 units. a) 10 b) 5 c) 20 d) 40

Last Answer : a) 10

When the rotational path of the magnetic field intensity is zero, then the current in the path will be a) 1 b) 0 c) ∞ d) 0.5

Description : When the rotational path of the magnetic field intensity is zero, then the current in the path will be a) 1 b) 0 c) ∞ d) 0.5

Last Answer : b) 0