Electricity and Magnetism Answers

There are ions in the blood, so the blood vessel can be modeled as a guide. Blood flow rate can be measured by placing a blood vessel in a magnetic field. In this case, the blood can be modeled as a conductor moving in a magnetic field to which a source voltage is induced according to the right-hand rule.

a) Blood flows at velocity v . Which one in the picture, A or B, is the positive pole of the voltmeter?

b) The vessel is 1.8 mm thick and is placed in a magnetic field with a magnetic flux density of 89 mT. The voltmeter shows 0.11 mV. Based on this, how high is the blood flow rate?

The peak voltage of the generator is 25 V. The side length of the square coil loop is 5.8 cm. The coil rotates at a speed of 340 RPM in a magnetic field with a magnetic flux density of 0.45 T.

a) How many turns must be in the winding?

b) What is the value of the induced voltage at time 0.5 s when the voltage at time zero is zero?

The coil rotates in a 0.15 T magnetic field at a speed of 50 revolutions per second. The area of ​​the coil is 1600 cm². How many turns of winding are needed to obtain an AC voltage with a frequency of 50 Hz and a peak voltage of 320 V?

Plot θ(1 − x) and θ(2 − x) where x is real. Further, plot f(x) =

θ(1 − x) ± θ(2 − x)

At what radius along the perpendicular bisector of a wire of a length 0.24 m carrying 30 nC of charge does the assumption of cylindrical symmetry in applying Gauss's law give you an answer whose error exceeds 5% ?

why is electromagnetic braking effect smooth in a train

two straight, parallel conductors situated a distance l from each other carry currents in opposite directions as shown below. one conductor carries a current of 1.0 a and the other carries a current of 3.0 a. the magnitude of the magnetic flux density at a point that is distance l to the right of the right conductor is br and that at another point that is distance l to the left of the left conductor is bl. determine the ratio bl/br.