In the figure (Figure 1) the top wire is 1.2-mm-diameter copper wire and is suspended in air due to the two magnetic forces from the bottom two wires. The current flow through the two bottom wires is 96 A in each. Calculate the required current flow in the suspended wire. Express your answer using two significant figures. —| ΑΣΦΑ Icu = ? A

Three long parallel wires are placed at the corners of an equilateral triangle as shown in the figure. The wires are separated by a distance d = 3.5 cm and each wire carries a current of 9.5 A. If the currents in wires 1 and 2 are directed into the page, and the current in wire 3 is directed out of the what is the force on wire 3 due to the other two? Parallel Wires.pdf page, 1.8 x 10-3 N directed 8.9 x 10-4 N directed up O 5.1 x 10-4 N directed up O 1.0 x 10-3 N directed up O 5.1 x 10-6 N directed up dn

A transmission line strung 10 m above the ground carries a current of 600 A. What is the magnetic field on the ground directly below the wire? HintMagnetic field due to the transmission line is _______ mT.

A 2.65 m segment of wire supplying current to the motor of a submerged submarine carries 1050 A and feels a 4.4 N repulsive force from a parallel wire 5.00 cm away. What is the magnitude of the current in the other wire in A?

A uniform magnetic field points from the S to N and has a magnitude of 0.022 T. A straight copper wire of diameter 0.812 mm is placed in this field in the E-W direction. Find the value of current flowing through the wire so that it starts floating. This is called magnetic kg Hint: Start by setting up equations in terms of variables levitation. The density of copper is 8960 m³ before substituting numerical values. |= A

The force on a wire is a maximum of 6.50 x 10-2 N when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to “jump” toward the observer when the current is turned on. What is the direction of magnetic field? What type of magnetic pole is the top pole face? If the pole faces have a diameter of 10.0 cm, estimate the current in the wire if the field is 0.16 T. If the wire is tipped so that it makes an angle of 10.0° with the horizontal, what force will it now feel?

As shown in the figure. A wire is carrying a current. the amount and direction of the magnetic feild at point C(B=2.10x10^-5 T) outwards Calculate the current in the wire and determine its direction.

3. A current Ij = 5.0 A flows counterclockwise in the rectangular loop of width b = 4 cm and height h = 4 cm as shown in fig. 3. Determine the net force on the loop when the current I2 = 1.5 A The distance between the wire and the closest side of the loop is 9 cm. I2 Figure 3 9 cm

Two wires carry currents i1 and i2 as shown below. If wire 1 carries a current i1 = 10 A and wire 2 carries a current i2 = 20 A, what is the strength of the force on wire 2?

Copper-Nickel 1,500 ngular Snip 1,400 LIQUID 1,300 UQU:D. a 1,200 L.100 1,000 900 400 300 PARAMAGNETIC 200 100 'FERROMAGNETIC O 10 20 30 0 s0 40 70 80 0 100 WEIGHT PERCENTAGE NICKEL. 1. For points F, G, H, I and J, determine the following: a) Temperature and phase of the material (liquid, solid or 2 phase solid and liquid) b) % solid and liquid 2. At point C (100% Ni), the Curie temperature is 350°C. At point D (68.5% Ni), the Curie temperature is 0°C. Derive the equation of Curie temperature as a function of % Ni. 3. Calculate the Curie temperature and the density of the Cu-Ni alloy at 80% and 90% Ni. Use the density table from the previous lecture. TEMPERATURE, *C.