Calculate the magnetic flux created by the field lines uniform magnetic force of 27 passing through a surface of 100 cm² with the following angles: a) 0° b) 30° c) 60° d) 90°
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- A rectangular coil of wire has a length of 3 cm and a width of 4 cm. It is in a 0.004 T magnetic field. What is the magnetic flux through the coil if the face of the coil is parallel to the B-field lines? What is the flux if the angle between the face of the coil and the magnetic field is 75°?Quantity that is not affected by magnetic field is Current flowing in conductor Moving charge Stationary charge None of the choicesWhat would be the inducesd voltage for a conductor moving at a speed of 25 km/h and having a length of 1 m being passed through a magnetic field with flux density of 0.6 T? 6.25 V 1.74 V 6250 V 1.736 mV none of the above
- Which of the following configurations can be used to apply Ampere's circuital law ? f the length of a solenoid is doubled but the number of turns is halved, the magnetic field inside will Ɔ cut by 1/2 Ɔ cut by 1/4 Ɔ Quadrable Ɔ Double A B None of the above C D ... ... O Only A Only A & B & C .... .... ... . Only D O All of them None of the aboveB. For the following magnetic circuit, the flux passing through the core is 1.32 mWb, the cross section of the core is 3 cm by 4 cm, the laminated section has a stacking factor of 0.9, and the gap is 1 mm. Determine the flux density in each section. Neglect fringing d N turns Cast iron Air gap Laminated sheet steelIn which of the cases given below a uniform magnetic field cannot exert a magnetic force on a particle? I) The particle is charged I) The particle's movement is perpendicular to the magnetic field III) The particle is at rest IV) An electric field is acting on a particle 18- O A) III and IV O B) Il and IV O ) Tand II O D) I and II O E) II
- A coil of wire is wound around the left side of a ferromagnetic core. It is supplied by a source (not shown in the figure), such that the current i1 is directed as shown. At the instant shown, the current i1 is increasing. What will be the direction of the magnetic flux through the core? O a. To the left O b. None of the others are correct. To the right Clockwise O c. O d. O e. O f. There will be no magnetic flux Counterclockwise core28 The electromagnet of Figure P13.28 has reluctance given by R(x) = 7 × 108(0.002 + x) H¬!, where x is the length of the variable gap in meters. The coil has 980 turns and 30-2 resistance. For an applied voltage of 120 V DC, findelectromagnetic theory What is the unit of magnetic flux density? a) Wb / m2 b) V / m c) Wb d) F / m
- A ferromagnetic core in the shape of a doughnut has a cross-sectional area of 0.11 m2 and an average length of 1.4 m. The permeabil ity of the core is 1.206 × 10-3 Wb/A-t. m. Determine the reluctance of the magnetic circuit100 windings are wound on an iron core and 1A direct current flows through it. The mean path of the iron part is 0.3m, the air gap is π*10^-3 m (0.0031415), the iron section is 300*10^-6 m^2, and the magnetic permeability of the core is 0.004 H/m. How many micro Webers is the magnetic flux through the air gap? a) 400 b) 23.30 c) 1.165 d) 200 e) 11.65Quantity that is not affected by magnetic field is? a)Stationary charge b)None of the choices c)Moving charge d)Current flowing in conductor