The bolt of lightning depicted in the figure below passes 200 m from a 105-turn coil oriented as shown. If the current in the lightning bolt falls from 6.01 X 10° A to zero in 10.9 us, what is the average voltage induced in the coil? Assume the distance to the center of the coil determines the average magnetic field at the coil's position. Treat the lightning bolt as a long, vertical wire. H, = 4 x 10" Tm/A 200 m Answer: I 008'0

Q: The flexible loop in the figure below has a radius of 10 cm and is in a magnetic field of strength…

A: radius, r = 10 cm  magnetic field, B = 0.19 T  time, t = 0.19 s radius, r = 10 cm radius, r = 10 cm…

Q: Consider a 12-loop coil with a diameter of 8 cm; a north-leading bar magnet moves further away from…

A:

Q: A square coil of wire of side 3.35 cm is placed in a uniform magnetic field of magnitude 2.25 T, The…

A: a. the magnitude of flux passing through the loop is  ϕB=NBA

Q: The figure below shows a 90-turn square coil rotating about a vertical axis a w= 1,410 rev/min. The…

A:

Q: The figure below shows a 108-turn square coil rotating about a vertical axis at at = 1,570 rev/min.…

A:

Q: In the figure, a stiff wire bent into a semicircle of radius a = 2.7 cm is rotated at constant…

A:

Q: A long infinite wire carries a current of 3.0 amps close to a single loop of wire with a radius (r)…

A: Given- Current flowing in the wire , initially I1 = 3.0 A Radius of single wire loop , r = 0.03 cm…

Q: coil consisting of 10 turns of wire each in an area of 0.025 m^2 is rotating in a magnetic field…

A:

Q: A coil with circular cross section and 24 turns is rotating at a rate of 430 rpm between the poles…

A: a)The required radius is,

Q: A circular coil of wire with 450 turns and a radius of 8.5 cm is placed horizontally on a table. A…

A: Given, N=450 turns R= 8.5 cm =8.5x10-2 m B(t) = 0.03 ×t 2. T/s2 uniform magnetic field pointing…

Q: A 9000 Amp lightning bolt strikes a vertical pole 50.0 m from a worker holding a coil of wire. The…

A:

Q: The figure attached shows a resistor that is connected in a circuit consisting of a circular loop…

A:

Q: The figure below shows a 99-turn square coil rotating about a vertical axis at at w = 1,450 rev/min.…

A: Given  Number of turns N=99  Angular velocity ω=1450rev/min=1450×2π60=151.77 rad/s side of square…

Q: A circular copper ring, A = 0.1 m2 shown below, with 10 loops is positioned in a (Bi) 0.300 T…

A: Magnetic flux is defined in a similar way as that to electric flux and is given by the dot product…

Q: The magnetic flux through a coil is changing as shown in the figure below. At which times (indicated…

A: We know that, induced current is directly proportional to rate of change of magnetic flux.

Q: The flexible loop in the figure below has a radius of 13 cm and is in a magnetic field of strength…

A: Given that radius of the flexible loop and strength of magnetic field and time takes to close the…

Q: The figure below displays a circular loop of aluminum wire in a uniform magnetic field pointing into…

A: CONCEPT: we know,   Magnetic flux  Φ=BA as magnetic field B is constant so change in magnetic flux…

Q: QUESTION 3 A 5.0-cm-radius conducting loop with a resistance of 4.0 is in the presence of a uniform…

A:

Q: Show your solutions Consider a circular coil of radius 6 cm that has 70 loops. Its orientation forms…

A: Dear student The induced emf is defined by: e = dϕdt Here, ϕ = Magnetic flux passing through closed…

Q: 6. A circular loop of wire with an area of 0.50 m2 is placed in a region with magnetic field B at…

A: Given:Area, A =0.50 m2Mafnetic field, B = 12-4t2Resistance, R = 2 Ωtime, t =4 s

Q: QUESTION 4 A 5.0-cm-radius conducting loop with a resistance of 4.0 Q is in the presence of a…

A:

Q: Here you see a single loop of stiff wire, 10.0 cm on a side, immersed in a magnetic field of 0.225…

A:

Q: A coil of wire with 50 turns lies in the plane of the page and has an initial area of 0.310 m2. The…

A:

Q: A square coil of side 4 cm and 200 windings initially lies perpendicular to a magnetic field of 4.0T…

A:

Q: A circular loop in the plane of a paper lies in a 0.65 T magnetic field pointing into the paper. The…

A:

Q: The space to the right of the y axis in (Figure 1) contains a uniform magnetic field of unknown…

A:

Q: A circular loop in the plane of the page/screen lies in a 0.65T magnetic field pointing into the…

A:

Q: Suppose a uniform magnetic field is perpendicular to a 8.5 by 11 in. sheet of paper and a…

A: Given Data: The length of a paper is, l=8.5 inch The breadth of paper is, b=11 inch The magnetic…

Q: coil formed by wrapping 60 turns of wire in the shape of a square is positioned in a magnetic field…

A:

Q: The bolt of lightning depicted in the figure below passes 200 m from a 110-turn coil oriented as…

A: It is given that

Q: neurologist is using a device, with a thin circular coil of current-carrying wire of radius 2.0 mm,…

A: Given :-   R = 2 mm  = 2 * 10-3 m  dBdt = 1.10 * 10 2 T /sec

Q: A coil has an area of 100 cm2 with 297 turns connected across a 5.00 Q resistor to form a closed…

A:

Q: what will be the magnitude of the induced emf in the loops of wire?

A:

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 2.8 x103 rad/min as…

A: (given) N is the number of turns = 100           Side of square coil = 20 cm…

Q: # 3. (b) A rectangular coil of 20 turns with dimensions 8 cm x 6 cm sides is held perpendicular to…

A: Given data: Magnetic field B=-4t2+3t+3 T Number of turns N= 20  emf E= 1.5V Dimensionsl x b= 8 cm x…

Q: square coil of side 4 cm and 200 windings initially lies perpendicular to a magnetic field of 4.0T…

A: Side of square coil (s) = 4 cm = 0.04 m Number of windings (N) = 200 Magnetic field strength (B) = 4…

Q: A coil has an area of 100 cm² with 219 turns connected across a 5.00 2 resistor to form a closed…

A: Given: Area of coil A = 100 cm2. Turns N = 219  Resistance R=5.0 Ω Initial magnetic Field B = 1.6 T…

Q: A coil of 10.0 turns is in the shape of an ellipse having a major axis of 10.0 cm and a minor axis…

A:

Q: A coil has an area of 100 cm2 with 297 turns connected across a 5.00 Q resistor to form a closed…

A:

Q: In the figure, the magnetic flux through the loop increases according to the relation ΦB = 4.9t2 +…

A: Given,

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.