Question 2 In the magnetic circuit detailed in below Figure with all dimensions in mm, calculate the required current to be passed in the coil having 200 turns in order to establish a flux density of 0.8 T in the center leg. The B-H curve of the material is given as shown in the figure. Permeability of air may be taken as, μo = 4 × 10-7 H/m B in Tesla 40 + 2.4 2.0 1.6 1.2 0.8 0.4 60 60 200 40 60 200 60 1000 2000 3000 H (AT/m) 500

Given the two charged particles shown in the figure below, find the electric field at the origin. (Let q₁ = -30.00 nC and 92= 7.00 nC. Express your answer in vector form.) 88521.16i + 62510.84j N/C -4 92 -2 X y (cm) 91 4 x (cm)

A 30 A current flows through the wire shown. What is the magnitude of the magnetic field (in T) due to a 0.4 mm segment of wire as measured at the following points? (a) point A T (b) point B T Submit Answer A 7 cm B 6 cm

Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 2.00 μc, and L = 7.00 με 60.0° L 0.650 m.) q -4.00 μC x (a) Calculate the electric field at the position of charge q due to the 7.00-μC and -4.00-μC charges. -10636.7 Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors. KN/CI + 128963 Think carefully about the direction of the field due to the 7.00-μC charge. KN/C ĵ (b) Use your answer to part (a) to determine the force on charge q. -21.3 If you know the electric field at a particular point, how do you find the force that acts on a charge at that point? mN I + 257.9 Check units carefully. Note that the field in part (a) is given in KN/J and the force in this part is given in mN. mN ĵ ×

Question B4 a) The strength of the magnetic field B at a distance r from a straight conductor car- is the permeability rying a current I is given by the expression B = of free space with the value 4n × 10-7 NA-2. Two long straight wires are lined up parallel to one another at a separation of 0.2 m. Currents of 4 A and 2 A flow through the wires, both in the same direction. Calculate the value of the magnetic field strength due to the two wires at a point P on the mid-plane between them. where 2r b) Calculate period of a small satellite which is making a circular orbit just outside a planet of density 4.0 × 10³ kg/m³. Provide the answer in SI units and in hours. Use the value of the universal gravitational constant 6.7 x 10-11 N kg-2m-2. c) A mass of 0.01 kg is suspended from a light spring of natural length 80 mm and causes the spring to extend by 10 mm. The mass is pulled down a further 5 mm and then released. Assuming g = 9.8 m/s², calculate: i) the spring constant. ii) the period of…

superposition of mag field 1

For the circuit involving ideal op amps shown in the image below, if R1 = 16 kS2, R2 = 30 kS2, R3 = 23 kS2, and R4 = 39 k2, determine the current io in the unit of µA. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. 6 Vo R2 R1 R3 7 Vo + 50 k2 Your Answer: Answer

The accepted resistivity value at room temperature for copper wire is 1.7421 x 10-8 ohm meter. please explain why or why not the measurements recorded are within some percent error of thius value. calculate resistivity and show the percent error. Use R=p L/A  Using the formula calculate p

the question is in the picture

A single square loop of wire is placed in the center of a large solenoid as shown. The solenoid has a radius 5.00 cm and the square loop is 3.0 cm on a side. The solenoid is 0.20 cm long and wound with 200 turns of wire. If the current in the solenoid is 3.00 A, what is the flux through the square loop? If the current in the solenoid drops to zero in 0.500 seconds, what is the magnitude of the average induced emf in the square loop?