In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.450 cm thick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m3 and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 4.40 x 10-12 v, what is the magnitude of the Earth's magnetic field at this location?

A copper wire is 10.00 m long and has a cross-sectional area of 2.00 ✕ 10-4 m2. This wire forms a one turn loop in the shape of square and is then connected to a battery that applies a potential difference of 0.100 V. If the loop is placed in a uniform magnetic field of magnitude 0.400 T, what is the maximum torque that can act on it? The resistivity of copper is 1.7 ✕ 10-8 ·m.

A magnetic field has a magnitude of 0.00090 T, and an electric field has a magnitude of 4.1 × 103 N/C. Both fields point in the same direction. A positive 1.7-μC charge moves at a speed of 4.4 × 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge.

The Hall effect can be used to determine the density of mobile electrons in a conductor. A thin strip of the material being investigated is immersed in a magnetic field and oriented so that its surface is perpendicular to the field. In a particular measurement, the magnetic field strength was 0.723 T, the strip was 0.107 mm thick, the current along the strip was 2.83 A, and the Hall voltage between the strip's edges was 2.73 mV. Find the density n of mobile electrons in the material. The elementary charge is 1.602 x 10-1° C. n = -3 m

A magnetic field has a magnitude of 0.00090 T, and an electric field has a magnitude of 4.1 x 103 N/C. Both fields point in the same direction. A positive 2.1-µC charge moves at a speed of 2.5 x 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge. Number MI Units B HI 90°

The straight wire that has been bent into a perfect circle has been placed in a perpendicular magnetic field has a length of 30.0 cm. The magnetic field is changing at a rate of 13 T/s. If the resistance of the wire loop is 3.6 Ω, the electric current in the wire will be:

In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.440 cm thick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m³ and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.80 x 1012 v, what is the magnitude of the Earth's magnetic field at this location? 0.0431 Your response is off by a multiple of ten. µT

11111 TEE MIXE ME ISASIE 1110 1 11F FRIT 111 Do all of the following: a) Write down an algebraic equation for the diameter D of the charged particle's circular path in a magnetic field. If necessary, you may derive the equation starting from Newton's 2nd Law with centripetal acceleration. Include the equation in the work you submit in the even-numbered question that follows. गाना TE EHE (2 GRE TE ONE TEDE b) Calculate this diameter value for singly-ionized oxygen-16 based on the given values. Enter the numerical value in the box below, with two digits after the decimal, in units of meters. This is the fixed distance between the entry and exit holes in the device shown above. c) Suppose you want to re-tune the magnetic field so that now oxygen-18 passes into the detector by following the circular path as before. This new isotope is 18/16 = 1.125 times more massive, but the charge and speed are ICM the same as before. What is the new value of the magnetic field that will make that…

Question is attached, Thanks a lot

A loop of wire moves with a velocity of 3.0 m/sm/s through a magnetic field whose strength decreases with distance at a rate of 5.0 μT/m�T/m. If the loop has an area of 0.75 m2m2 and internal resistance of 0.50 ΩΩ, what is the current in the wire?