A coil (solenoid) of 3 cm length and 250 turns is used to create a magnetic flux density. Which current is required to compensate the Earth’s magnetic flux density?
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A coil (solenoid) of 3 cm length and 250 turns is used to create a magnetic flux density.
Which current is required to compensate the Earth’s magnetic flux density?
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- In one of NASA's space tether experiments, a 20.0 km long conducting wire was deployed as a power source by the space shuttle as it orbited at 7.86 × 10³ m/s around earth and across earth's magnetic field lines. If the component of earth's magnetic field perpendicular to the tether was 1.16 x 10-5 T, determine the maximum possible potential difference between the two ends of the tether.The magnetic field inside an air-filled solenoid 40.0 cm long and 3.00 cm in diameter is 0.535 T . Approximately how much energy is stored in this field?A flat circular coil of 1 cm radius is rotated at 10 revolutions per second about an axis that is perpendicular to a uniform magnetic field of magnitude 2.5 T. How many turns are required in the coil to generate a peak voltage of 750 mV? a) 2 turns b) 5 turns c) 8 turns d) 15 turns e) 20 turns
- Question in the attachmentsThe magnetic field inside an air-filled solenoid 40.0cm long and 3.00cm in diameter is 0.707 T. Approximately how much energy is stored in this field?9. A uniform magnetic field is directed normal to the plane of a wire that has been formed into a circular ring of radius, r = 3.1 cm. The magnetic field is uniform in space, but changes with time. The resistance of this ring is R = 2.0 2. A steady current of i = 2.5 mA flows through the wire. How fast is the magnetie field changing?
- The figure below shows a cross section of a long thin ribbon of width w = 5.72 cm that is carrying a uniformly distributed total current i = 3.76 µA into the page. Calculate the magnitude of the magnetic field at a point Pin the plane of the ribbon at a distance d = 2.60 cm from its edge. (Hint: Imagine the ribbon as being constructed from many long, thin, parallel wires.) Number UnitsA solenoid that is 124 cm long has a cross-sectional area of 25.0 cm². There are 925 turns of wire carrying a current of 5.40 A. (a) Calculate the energy density of the magnetic field inside the solenoid. (b) Find the total energy in joules stored in the magnetic field there (neglect end effects). (a) Number Units (b) Number i UnitsThe loop shown below has a radius of 12 cm and is placed in a magnetic field oriented into the page, as shown. The resistance of the loop is 5 ohms. The magnitude of the magnetic field may be modeled as B(t )=3−2t . Determine the magnitude and direction of the current in the loop at time t = 3 seconds.
- In an electric motor, a coil with 131 turns of radius 2.20 cm can rotate between the poles of a magnet. The magnetic field magnitude is 0.200 T. When the current through the coil is 40.3 mA, what is the maximum torque that the motor can deliver?A magnetic field has a magnitude of 0.0527 T and is uniform over a circular surface whose radius is 0.226 m. The field is oriented at an angle of 27.9o with respect to the normal to the surface. What is the magnetic flux through the surface?A solenoid of length 2.50 cm and radius 0.750 cm has 33 turns. If the wire of the solenoid has 1.25 amps of current, what is the magnitude of the magnetic field inside the solenoid? magnitude of the magnetic field: 2.07 x10-3 Ignoring the weak magnetic field outside the solenoid, find the magnetic energy density inside the solenoid. magnetic energy density: 1.70 J/m³ What is the total magnetic energy inside the solenoid? 3.19 x10¬6 total magnetic energy: J Incorrect