What happens to the magnitude of the magnetic field inside a long solenoid if the current is doubled? (a) It becomes four times larger. (b) It becomes twice as large. (c) It is unchanged.  (d) It becomes one-half as large. (e) It becomes one-fourth as large.

Q: If the distance away from a long, straight current carrying wire is doubled, what happens to the…

A:

Q: An air-core solenoid with 66 turns is 8.00 cm long and has a diameter of 1.20 cm. When the solenoid…

A: Self-inductance for an air cored solenoid is given as:

Q: Which of the following angles with respect to the direction of a uniform magnetic field is a…

A: The potential energy of a magnetic dipole in a uniform magnetic field, U=−mBcosθ

Q: Doubling the radius of a circular current-carrying wire, the magnetic field at the center of the…

A: The condition of the radius is given as R2=2R1

Q: An unusual lightning strike has a vertical portion with a positive current of +400 A upwards. The…

A: Given : I = +400 A B = 30 uT = 30 x 10-6 T L = 15 m

Q: How strong is the magnetic field inside a solenoid with 20,000 turns, a radius of 20.0cm and that…

A:

Q: A device called a toroid (Fig. ) is often used to create an almost uniform magnetic field in some…

A:

Q: A solenoid that is 72 cm long produces a magnetic field of 1.8 Twithin its core when it carries a…

A:

Q: Must every magnetic configuration have a north pole and a south pole? What about the field due to a…

A: In universe magnetic monopole does not exists. Hence, for any magnetic configuration North and South…

Q: etermine the magnetic field inside a solenoid that carries a current of I = 0.60 A. The solenoid…

A:

Q: Suppose you have a 32.0-m length of copper wire. If the wire is wrapped into a solenoid 0.240 m long…

A:

Q: The force experienced by a particle of charge q moving with a velocity v in a uniform magnetic field…

A: Given data: F→=qv→×B→

Q: An electron traveling due east enters a region that contains a uniform magnetic field that points…

A:

Q: A cardiac pacemaker can be affected by a static magnetic field as small as 1.7 mT. How close can a…

A: magnetic field B = 1.7 mT = 1.7 *10-3 T current i = 17 A permeability of free space μo = 4 π* 10…

Q: A long solenoid that has 1.00 x 103 turns uniformly distributedover a length of 0.400 m produces a…

A: The expression for the current from the equation of magnetic field for solenoid is,

Q: It is desired to construct a solenoid that will have a resistanceof 5.00 Ω (at 20°C) and produce a…

A: a)The length of the solenoid is,

Q: A proton is accelerated from rest through a potential difference of 150 V. It then enters a region…

A: Given : V = 150 V r = 4 cm = 0.04 m m = 1.67 x 10-27 kg q = 1.6 x 10-19 C

Q: When a straight wire that carries a current is placed in a uniform magnetic field, the wire: a)…

A: Given A straight wire that carries current and placed in an external magnetic field.   We have to…

Q: If the distance from a current carrying wire doubles, the magnetic fi?eld produced by it a.…

A: IN THE QUESTION IT IS GIVEN THAT A CONDUCTOR IS CARRYING CURRENT (I) FROM THE APPLICATION OF…

Q: The force experience by a straight conductor placed perpendicular to the magnetic field is a) Zero…

A: Force on the conductor is defined as F=BILsinθ Here B is the magnetic field, I is current in the…

Q: Why magnetic field strength increases when you put a ferromagnetic material inside a solenoid…

A:

Q: A current carrying coil is placed in a uniform magnetic field. If the coil turns through an angle 0,…

A: We know that M = NIA  Where M is the magnetic moment of the loop  N is the number of turns of the…

Q: Does increasing the magnitude of a uniform magnetic field through which a charge is traveling…

A:

Q: The magnitude of the magnetic field density at point b is * 3 points l=6 A l2=3 A d= 10-4 m d 2 mT 3…

A: B = u0I / 2πd

Q: An electron entered an area with a uniform magnetic field 45 mT (directed out of the page) with a…

A:

Q: a.Find the directionof the force on the wiresegment. b.Find the magnitude of the force on the…

A:

Q: A solenoid of length 1.20 m and radius 10.0 cm is comprised of 500 turns of wire. Determine the…

A: Given data: Length (L) = 1.20 m Radius (r) = 10.0 cm Number of turns (N) = 500 turns Current (I) =…

Q: determine the magnitude of 2 straight parallel conducting wires that carry equal amount of current…

A:

Q: 2.2 a. 2 MONI (magnitude of B dloublt s) b. Ho NI cmagntude of B reduces by half) 21 Mo NI (…

A:

Q: A device called a toroid (Fig. ) is often used to create an almost uniform magnetic field in some…

A:

Q: A loop of wire carrying a current of 2.0 A is in the shape of a right triangle with two equal sides,…

A: Given : I = 2 A L = 15 cm = 0.15 m B = 0.7 T θ = 0° (because magnetic field is parallel to the…

Q: What velocity would the rod below need to move if I wanted to generate a current of 0.067 A? The…

A: Given information: Here, I is the induced current, R is the resistance, B is the magnetic field…

Q: Suppose that the magnetic dipole moment of Earth is 9.0 x 1024 J/T. (a) If the origin of this…

A: Given,Magnetic dipole moment of the earth, μtot = 9×1024 J/TRadius of the earth, RE = 6.37×106…

Q: The magnetic field strength inside a certain solenoid is 50 mT. If a 4 cm conducting strip, which is…

A:

Q: A solenoid has length L, total number of turns N and current I. What happens to the magnitude of the…

A: Given:-  The length of the Solenoid is L, a total number of turns N, and current I.  The magnetic…

Q: within the green dashed circle shown in the figure below, the magnetic fleld changes with time…

A: Given, magnetic field at the region, B = 3.00t3 -3.00t2+0.800 R = 2.65 cm r1 = 5.30 cmt = 2.00 s

Q: Suppose that the dipole moment associated with an iron atom of an iron bar is 2.8 × 10 23 J/T. The…

A: (given) Magnitude of dipole moment μ = 2.8 ×10-23 J/T                                 Length of bar…

Q: A closed loop of an irregular shape is placed in a region of uniform magnetic field of magnitude…

A: Let B denotes the magnetic field, l denotes the length and i denotes the current.

Q: Why is the following situation impossible? Imagine a copper wire with radius 1.00 mm encircling the…

A: The expression for resistance is

Q: A proton moving at 2.0 x 10 m/s perpendicularly to a magnetic field of 1.0 T, experiences a…

A:

Q: An air-core solenoid with 64 turns is 8.00 cm long and has a diameter of 1.20 cm. When the solenoid…

A:

Q: An electron is projected into a uniform magnetic field given by B = (0.2,0.5,0) T. e vector…

A:

Q: How much energy is stored in the magnetic field of a 20.0-cm-long solenoid that has 156 turns and a…

A:

Q: The magnetic field inside a solenoid is proportional to both the applied current and the number of…

A:

Q: The magnetic field in the interstellar space of our galaxy has a magnitude of about 10-10 T. How…

A: The expression for the required stored energy in a cube of volume is,

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.