Small one-cylinder gasoline engines sometimes use a device called a magneto to supply current to the spark plug. A permanent magnet is attached to the flywheel, and a stationary coil is mounted adjacent to it. Explain how this device is able to generate current. What happens when the magnet passes the coil?

Q: A rectangular coil with 225 turns is 5.0 cm high and 4.0 cm wide. When the coil is placed in a…

A: Number of turns, N = 225  length, L = 5 cm  width, w = 4 cm magnetic field, B = 0.25 T  torque =…

Q: An airplane with a total width of wings as 35 m, flies eastbound at a location where the downward…

A: Write the given values with the suitable variables. L=35 mB=1.3×10-4 TBw=0.47×10-4 Tv=0.35 km/s=350…

Q: In an MRI machine, a large magnetic field is generated by the cylindrical solenoid surrounding the…

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Q: A jet passenger airplane is traveling at a constant altitude of 8,000 m. At that given altitude, the…

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Q: What is the strength of the magnetic field at the center of the two concentric conducting coils…

A: Given: Radius of outer coil R=4 cm, radius of inner coil r=3 cm, Current in outer coil Io=7 A,…

Q: A proton travels at 2.0x107 m / s in a plane perpendicular to a uniform magnetic field of 2.5 T, as…

A: We have to use some basic formula here.

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 sheet of copper is placed between the poles of an electromagnet with the magnetic field…

A: If the sheet of copper is placed between the poles of an electromagnet with magnetic field…

Q: 7. A conducting rod whose length is e= 1.60 m is placed on frictionless U-shaped metal rails that is…

A: force on conducting rod moving in U shaped  conducting rails separated by dome distance in uniform…

Q: The image below shows a segment of a current carrying circular loop in an external magnetic field.…

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Q: A wire loop is in a uniform magnetic field as shown. Current flows in the wire loop, as shown. What…

A: A wire loop in a uniform magnetic field.

Q: Q5. The diagram shows a magnetic field that is zero for x . An electron initially at rest on the…

A: (1) The accelerated voltage  (V)=20 kV Initial velocity (u)= 0 Final velocity is v. Then by work…

Q: 4. A toroid of circular cross section whose center is at the origin and axis the same as the z-axis…

A: Number of turns,N=500 ρ0=10 cm=0.1 m,a=2 cm=0.02 mCurrent,I=500 mA=500×10-3A From the ampere law,we…

Q: A stationary square coil of area 0.1 m² is brought into the magnetic field 4 T with its plane…

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Q: of a dipole magnet tha ST. The torque on the

A: Given: Wire has 150 turns N=150 Radius is 7.5 cm, r=7.5 cm Torque is 0.25 N.m B=1.5 T

Q: 50. A paramagnetic substance, in an external magnetic field, is thermally isolated. The field is…

A: Here, we look into the paramagnetic behaviour and then see what happens when a paramagnetic…

Q: If a magnet is suspended over a container of liquid air, it attracts droplets to its poles. The…

A: Paramagnetic material: It is a kind of material, whose molecule do not interact magnetically with…

Q: Young domestic chickens have the ability to orient themselves in the earth's magnetic field.…

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Q: A 1100-turn coil of wire 2.10 cm in diameter is in a magnetic field that increases from 0 T to 0.110…

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Q: A cylindrical solenoid that is 40-cm long generates a uniform magnetic field of strength 1.4 T…

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Q: A square coil and a rectangular coil are each made from the same length of wire. Each contains a…

A: Let the length of wire used in each coil = L Let the magnetic field in each coil= B Let the current…

Q: A square coil and a rectangular coil are each made from the same length of wire. Each contains a…

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Q: A circular coil of wire of 200 turns and diameter 5 cm carries a current of 4 A. It is placed in a…

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Q: creasing radius. Indicate the direction of the current in one ring (a) as the metal swings down from…

A: Given data: A circular metal plate swings past the north pole of a permanent magnet. The metal is…

Q: The rod shown in the accompanying figure is moving through a uniform magnetic field of strength B =…

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Q: Two coils have the same number of circular turns and carry the same current. Each rotates in a…

A: The expression for the torque, τ=μ×B   The maximum torque, τmax=μΒ=NIAB