A circular coil enclosing an area of 100 cm2 is made of200 turns of copper wire. The wire making up the coil hasresistance of 5.0 Ω, and the ends of the wire are connectedto form a closed circuit. Initially, a 1.1-T uniform magneticfield points perpendicularly upward through the plane of thecoil. The direction of the field then reverses so that the finalmagnetic field has a magnitude of 1.1 T and points downwardthrough the coil. If the time required for the field to reversedirections is 0.10 s, what is the average current in the coilduring that time?

Q: A square loop of wire is rotating clockwise at a speed of 7.0 revolutions per second in a uniform…

A: w= 7 rev/sec = 7 *2π rad/sec B=0.02 T side = 15 cm = 0.15 m  area (A) = 0.15 * 0.15 = 0.0225 m2 R =…

Q: Assume that a car travels northward at 75km/h along a straight road in a region where Earth’s…

A: Given data :- velocity of car v = 75 km/h = 20.833 m/s vertical component of the Earth’s magnetic…

Q: The figure shows a bar of mass m = 0.250 kg that can slide without friction on a pair of rails…

A: The below figure represents the force exerted by the bar.

Q: A rectangular loop shown in Fig 4 (b) with width of 20 cm is in a static magnetic field B = 0.8x²2.…

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Q: How fast would a metalic airplane with a 25 m wingspan have to fly through the vertical 5.6 x 10-8 T…

A: As charges on wing span experiece magnetic force and travel to the ends of wing and electric field…

Q: circular coil enclosing an area of 120 cm2 is made of 190 turns of copper wire. The wire making up…

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Q: A circular loop of wire with radius 3 m is flat on the xy plane in a magnetic field which is pointed…

A: Given: Initial Radius of loop (R) = 3.0 m. Final radius of loop (r) = 1.5 m. Changing time (dt) =…

Q: If 50.0 cm of copper wire (diameter = 1.00 mm) isformed into a circular loop and placed…

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Q: A car travels northward at 75km/h along a straight road in a region where Earth’s magnetic field has…

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Q: If 71.4 cm of copper wire (diameter = 0.860 mm, resistivity 1.69 x 10 S-m) is formed into a circular…

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Q: A rectangular coil 0.055 m by 0.085 m is positioned so that its cross-sectional area is…

A: Given data: length of the coil l=0.05m  Breadth of the coil b =0.085m Number of turns N=75 turns…

Q: An airplane wingspan can be approximated as a conducting rod of length 30 m. As the airplane flies…

A: The expression for the Hall emf is,

Q: A flat, square, 75-turn coil of wire is rotated from having its plane perpendicular to an external,…

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Q: circular loop of radius 5.1 cm is formed, placed with its plane perpendicular to a uniform magnetic…

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Q: If 53.6 cm of copper wire (diameter = 0.889 mm, resistivity = 1.69 x 100-m) is formed into a…

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Q: The magnetic field perpendicular to a single 16.4 cm-diameter circular loop of copper wire decreases…

A: Given data : diameter of circular loop, D = 16.4 cm = 0.164 m initial magnetic field, B1 = 0.560 T…

Q: A 19.0 cm-diameter coil consists of 30 turns of circular copper wire 2.2 mm in diameter. A uniform…

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Q: In one of NASA's space tether experiments, a 20.0 km-long conducting wire was deployed by the space…

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Q: A loop made of elastic wire has an initial area of 1.00m2 . The loop is in a region containing a…

A: Given: Initial area of the loop, A = 1 m2 Magnetic field, B = 1 T EMF generated, e = 1.5 V

Q: a wood cylinder of mass m = 0.250 kg and length L = 0.100 m, with N = 10.0 turns of wire wrapped…

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Q: A planar coil of wire is placed with its plane perpendicular to a uniform magnetic field of 1.6 T.…

A: Rate at which area changes is  dA/dt = - 0.5 m2/s

Q: Consider a conducting rod of length 29 cm moving along a pair of rails, and a magnetic field…

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Q: A magnetic B field of strength 12 T is perpendicular to a conducting loop of wire measuring 0.8…

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Q: A circular coil enclosing an area of 180 cm2 is made of 210 turns of copper wire. The wire making up…

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Q: A technician wearing a circular metal band on his wrist moves his hand into a uniform magnetic field…

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Q: A uniform magnetic field is perpendicular to the plane of a circular loop of diameter 10 cm formed…

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Q: In one of NASA's space tether experiments, a 20.0 km-long conducting wire was deployed by the space…

A: The length of the conducting wire is, 20 km =20,000 m The velocity is 7.86 ✕ 103 m/s The…

Q: A single loop of area 200 cm2 is positioned perpendicular to a uniform magnetic field. Without…

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Q: A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a…

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Q: A circular coil enclosing an area of 200 cm2 is made of 190 turns of copper wire. The wire making up…

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Q: A conducting rod is moving through a magnetic field, as in the drawing. The magnetic field strength…

A: SOlution: given that Magnetic field strength (B) = 0.65 T  Speed (v) = 2.7 m/s sudden change into,…

Q: A circular loop of area 25 m2 encloses a magnetic field perpendicular to the plane of the loop; its…

A: Given data: area of circular loop, A  = 25 m2  magnetic field, B  = 10 t  capacitance of capacitor,…

Q: A train is moving directly south with a speed of 10 m/s. if the downward vertical component of the…

A: Given data: Speed of train, V=10 m/s Earth's magnetic field, B=0.54 G Length of the rail car axle,…

Q: One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of…

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Q: A 227-turn circular coil of radius 24 cm is perpendicular to a uniform magnetic field of 0.55 T.…

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Q: A coil of wire consists of 20 turns each of which has an area of 0.0015 m². A magnetic field is…

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Q: The plane of a conductive loop with an area of 0.020 m^2 is perpendicular to a uniform magnetic…

A: Given, area of the conductive loop, A = 0.020 m2 Magnetic field is the perpendicular to the surface…

Q: A conducting rod with length L = 18.6 cm is being pulled along a long rotated U-shape conductor,…

A: Write the expression for the induced emf and substitute the required values.

Q: A circular copper loop is placed perpendicular to a uniform magnetic field of 0.05 T. Due to…

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Q: Find the emf induced between the wingtips of a jet with a 67.8 m long wingspan, flying at v = 224…

A: Given data: Length, l = 67.8 m Velocity, v = 224 m/s Magnetic field, B = 63.3 μT = 63.3 x 10-6 T…

Q: A uniform electric field of magnitude 5.06 x 10° V/m throughout a cylindrical volume re- sults in a…

A: Given,WE  uniform electric field in the region, E = 5.06×105 Vm total energy stored, U = 2.95 μJ

Q: A wire loop that encloses an area of 15 cm? is perpendicular to a magnetic field of 0.10 T. If the…

A: given data area = 15cm2 magnetic field = 0.10 T field is drops to 0.04 T in 0.2 s average emf…

Q: A flat coil of wire consisting of 15 turns, each with an area of 53 cm², is positioned…

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.