A small circular coil of 20 loops of wire having a radius of 1 cm is at rest in the x-y plane (so the normal to the loop points in the +z- direction). A uniform magnetic field of 0.5 T is turned on in the +z- direction. What is the magnetic flux through the loop? D a. 7.85 x 10 5 T m2 a b. 3.14 x 10 3 T m? O c. 0T m? o d. 1.57 x 104Tm? Question 2 t yet answered Flag question Now if the above loop is then spun about the y-axis at a rate of 1000 rpm (revolutions per minute), what will be the EMF generated by the loop (in Volts)? Enter a description of your calculations and your final answer in the text box (just as if it were a HW assignment) 1 A BIu - I = = E |

What is the magnetic field at P? r OA: 1.405x10-6 I A long wire carries electric current I = 1.5 A. What is the magnetic field at the point P? The perpendicular distance from P to the wire is r = 2.9 cm. (in T) OB: 1.869x10-6 I OC: OD: OF: OG: 2.486x10-6 3.306x10-6 4.397x10-6 5.848x10-6 7.778x10-6 OF OH: 1.034x10-5

A rectangular semi- conductor of length 50 mm, width 30 mm and depth 20 mm in the same uniform magnetic field of 12500 Oersteds. It was observed that 12500 Oersteds produces Hall voltage of 0.5 milli Volts. Find the number density of charge carriers. a. 9.72 x 1024 /m³ b. 3.9 x 1024 /m³ 9.72 x 1028 / m³ d. 3.9 x 1028 /m³ C. e. None of the above

Two circular loops of wire lie in the x-y plane, centered at the origin. The radius of the loops is 5.00 and 7.00 cm. The current in the outer loop is 50.0 mA in the clockwise direction. a. If the current in the inner wire is also 50.0 mA in the clockwise direction, what is the magnetic field strength at the origin? b. What current magnitude and direction in the inner wire will cause the magnetic field to be zero at the origin?