The magnetic field inside a superconducting solenoid is 4.50 T. The solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. Determine the magnetic energy density in the field.

You wish to construct a solenoid with a diameter of 2.00 cm that will produce a magnetic field of 6.20 × 10¬2 T at its center when a current of 14.0 A is passing through the coils. You want the resistance of the coil wire to be 5.60 . The resistivity of the wire used is 1.70 x 10-8 N:m (at 20.0°C), and you are using a wire that has a cross sectional area of 3.14 × 10¬8 m². (Note that this solenoid may not necessarily be so tightly wound that the adjacent loops of wire will touch each other. Nonetheless, you may assume that it behaves like an ideal solenoid.) Determine the following. (a) number of turns needed on the solenoid turns (b) length of the solenoid

A solenoid has the following dimensions. inner diameter d = 4.22 cm length L = 42.7 cm When a current flows through the coil of the solenoid, the magnetic field inside the solenoid is 5.40 T. (a) Determine the magnetic energy density (in J/m³) in the field. UB = 1.16 Apply the equation for the magnetic energy density and insert values. J/m³ (b) Determine the energy (in kJ) stored in the magnetic field within the solenoid. KJ UB =

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?

A 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 Units

The magnetic flux though a coil of wire that has 70 turns is changing at a rate of 0.030 Tm^2/s. What is the magnitude of the voltage generated across the ends of the wire loop?

It is desired to construct a solenoid that will have a resistance of 4.65 N (at 20°C) and produce a magnetic field of 4.00 x 10-2T at its center when it carries a current of 3.85 A. The solenoid is to be constructed from copper wire having a diameter of 0.500 mm. If the radius of the solenoid is to be 1.00 cm, determine the following. (The resistivity of copper at 20°C is 1.7 x 10-8 n. m.) (a) the number of turns of wire needed to build the solenoid 853.2 v turns (b) the length the solenoid should have 426 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. cm

A rectangular slab (length 2.5 cm, width 1.5 cm, thickness 5.0 mm) of an unknown semiconductor with an unknown dopant was analyzed by placing it under a perpendicular magnetic field of strength 0.10 T in the +y direction, as well as subjecting it to a current of 7.5 A in the +x direction.    A voltmeter measured that the potential on the top of the slab (as seen from the front) is 93.75 mV higher than the bottom.  What is the majority charge carrier?Justify why.

An air-core solenoid with 66 turns is 8.00 cm long and has a diameter of 1.20 cm. When the solenoid carries a current of 0.700 A, how much energy is stored in its magnetic field? 1.57 What is the inductance of this solenoid? µJ

A solenoid is made with a superconducting material and the magnetic field inside it is measured to be 6.8 T. Estimate the magnetic energy density in the field.