A device called a railgun uses the magnetic force on currents to launch projectiles at very high speeds. An idealized model of a railgun is illustrated in (Figure 1). A 1.2 V power supply is connected to two conducting rails. A segment of copper wire, in a region of uniform magnetic field, slides freely on the rails. The wire has a 0.92 mΩ resistance and a mass of 4.4 g . Ignore the resistance of the rails. The power supply is switched on.  Part A: What is the current? Express your answer with the appropriate units. Part C: What is the magnitude of the force on the wire? Express your answer with the appropriate units. PArt D: What will be the wire's speed after it has slid a distance of 7.0 cm? Express your answer with the appropriate units.

Q: You may have used a set of jumper cables connected to a running vehicle to start a car with a dead…

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Q: An electron with a kinetic energy of 1.09  104 eV is initially moving south in a uniform magnetic…

A: A moving electron placed in the uniform magnetic field which is perpendicular the direction of…

Q: A long, straight wire carrying a current of 2.6 A is placed in the plane of a conducting strip of…

A: Given I1=2.6A, I2=4.4A d=4.0cm=0.04m, b=8.0cm=0.08m

Q: Suppose that the light bulb in Figure 22.4b is a 60.0-W bulb with a resistance of 287 Ω. The…

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Q: Two long wires are placed parallel to each other. Wire 1 is very long and wire 2 has length 10 cm.…

A: Given, The length of the wire 2, L2=10cmL2=0.1m Distance between two wires, d=2mmd=2×10-3m The…

Q: Two infinitely long parallel wires are at a distance of 5.0 cm apart. If the wires carry a current…

A: Given: r = 5 cm = 0.05 m I1=I2 =4.8 A

Q: Suppose you wish to measure the current in a wire.  You have a device that can measure the strength…

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Q: a)Two 2.0 m long parallel wires, P and Q are separated by a distance of 20 mm, carrying currents of…

A: Length, L = 2 mDistance, d = 0.02 m Let current be denoted by I.  I1 = 5.5 AI2 = 2.2 A       Note:…

Q: A cosmic ray muon with the same charge as an electron is moving toward the ground at an angle of…

A: To determine the direction of the force on the muon at point P, you need to apply the Lorentz force…

Q: Two long, parallel conductors, separated by 14.0 cm, carry currents in the same direction. The first…

A: (a) The magnitude of the magnetic field created by I1 at the location of I2 is, B12=μ0I12πa=4π×10-7…

Q: Two infinitely long parallel wires are at a distance of 5.0 cm apart. If the wires carry a current…

A: distance between two wires (d) = 5 cm = 0.05 m current in each of two parallel wires (I) = 1.2 A

Q: he strength of the magnetic field produced by the wire, but the device does not directly measure the…

A: Given:- The distance from the wire is r = 0.98 m  The magnetic field strength is B = 1.72 μT Find:-…

Q: A current carrying conductor that is 3.00 x 10-2 m long is placed perpendicular to a magnetic field…

A: Given: The length of the conductor is 3x10-2 m. The strength of the magnetic field is 5x10-2 T. The…

Q: The lightbulb in the circuit shown in the figure(Figure 1) has a resistance of 11 2 and consumes 0.1…

A: Now

Q: A circular loop made of copper wire with a diameter 0.96 mm is placed in a uniform magnetic field…

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Q: The electrons in the beam of a television tube have a kinetic energy of 1.97 × 10-15 J. Initially,…

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Q: MRI: Magnetic resonance imaging (MRI) uses a very strong magnet to create an image. The maximum…

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Q: A wire 2 m long has a mass of 342 g. The wire is connected to an emf. What is the minimum current in…

A: Write the given values with the suitable variables. L=2 mm=342 g=0.342 kgB=1.9 T Here, L, m, and B…

Q: You are performing studies of the possibility of migrating birds using the Earth's magnetic field…

A: Resistance of each coil (R) = 210 ohm Radius (r) = 1.15 cm = 0.0115 m Number of turns (N) =…

Q: The figure below shows an arrangement in which four long parallel wires carry equal currents…

A: Given that:i1=i2=i3=i4=4.5 Aa=40 cm=0.40 m

Q: An electron follows a helical path in a uniform magnetic field of magnitude 0.396 T. The pitch of…

A: Let v1 be the parallel component of the velocity, and v2 be the perpendicular component of the…

Q: A long solenoid has 78 turns/cm and carries current i. An electron moves within the solenoid in a…

A: The current i in the solenoid. given: Speed of electronve=0.0359cnumber of turns per unit…

Q: An electron with a kinetic energy of 1.08  104 eV is initially moving south in a uniform magnetic…

A: Given, kinetic rnergy of an electron, KE = 1.08 × 104 eVuniform magnetic field in the region, B =…

Q: Suppose you wish to measure the current in a wire. You have a device that can measure the strength…

A: Given:-  The  magnitude of the magnetic field is B = 1.72 μ T  The magnetic field B is r = 0.98 m…

Q: ou are performing studies of the possibility of migrating birds using the Earth's magnetic field for…

A: Resistance is  Radius  is  Number of turns is The centers of the coils are separated by distance…

Q: The body contains many small currents caused by the motion of ions in the organs and cells.…

A: The measured magnetic field around the chest due to the currents in the heart is, B=10 mG=10×10-3 G1…

Q: Two long, parallel wires, each with a mass per unit length of 40 g/m, are supported in a horizontal…

A: The figure shows the arrangement of the wire,

Q: The figure below shows an arrangement in which four long parallel wires carry equal currents…

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Q: Magnetic forces can be used to accelerate projectiles to very high speeds in a so-called railgun. In…

A: Magnetic force acting on a conductor of length L placed in uniform magnetic  field is given as…

Q: The figure below shows an arrangement in which four long parallel wires carry equal currents…

A:

Q: The figure below shows a piece of insulated wire formed into the shape of a figure eight. You may…

A: r1=3 cm=0.03 mr2=8 cm=0.08 mλ=9 Ω/mdBdt=1.7 T/s

Q: A copper wire is 10.00 m long and has a cross-sectional area of 2.00 ✕ 10-4 m2. This wire forms a…

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Q: A very long straight wire carries a current of 10 A. Meanwhile, a 10-cm x 30-cm rectangular loop…

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Q: The figure below shows a piece of insulated wire formed into the shape of a figure eight. You may…

A: Given: The radius is 3 cm Radius is 8 cm Length of 4 ohm/m

Q: When operated on a household 110.0 V line, typical hair dryers draw about 1450 W of power. The…

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Q: Two long parallel wires hang by 4.00 cm long cords. The wires have a mass per unit length of 0.0125…

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Q: A helium nucleus (2 protons, 2 neutrons) is traveling at a velocity of 8.73 x 10^6 m/s a distance of…

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Q: Suppose that the light bulb in Figure 22.4b is a 60.0-W bulb with a resistance of 214 Ω. The…

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Q: Two identical conducting bars of length 56.6 cm can be moved across two parallel conducting wires.…

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Q: You are performing studies of the possibility of migrating birds using the Earth's magnetic field…

A: Given : N = 50 R = 210 ohms r = 1.10 cm = 0.011 m x = 2.15/2 cm = 1.075 cm = 0.01075 m B = 4 x 10-5…

Q: Two infinitely long parallel wires are at a distance of 5.0 cm apart. If the wires carry a current…

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Q: A straight conductor of fixed length / is moving at 45 degrees to a uniform magnetic field of…

A: According to Faraday's law Induced emf = - rate of Change of magnetic flux

Q: m v = 8.0– S R = 25 N l = 15 cm || : = 1.5 T

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Q: Three conductors are carrying currents, I = 5 A into the page and l2 = l3 = 1A out of page, as shown…

A: Given: The current in the first wire is 5 A into the page. The current in the second wire is 1 A out…

Q: A spark can jump between two nontouching conductors if the potential difference between them is…

A: let v be the velocity of the rod, then the induced emf (potential across the gap) is ε=vBl where,…

Q: As seen in Figure 2, a rod with minimal resistance rotates at an angular velocity of @= 5.0 rad/s…

A: angular velocity  = 5 rad/s. The radius = 0.2 m. The magnetic field B = 0.3 T. The resistance per…

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.