A strip of metal 23.0 cm long (made from copper, with 8.47 x 1028 charge carriers/m³) is placed in a uniform magnetic field oriented perpendicular to the strip with magnitude 0.830 T. A current / = 4.10 A is passed through the strip, giving rise to a Hall potential across its thickness of 0.520 mm. What is the magnitude of the Hall potential that arises? i V

A proton enters a region of uniform magnetic feild (B) = (0.020 I)T and a uniform electric feild E . When the velocity of the proton is (3000k) m/s, it experiences an acceleration of (9.6x10^9 j) m/s². The magnitude E of the electric feild is equal to what? The options below have units V/m. a. 160 V/m b. 100 V/m c. 60 V/m d. 40 V/m e. 0

A magnet in the form of a cylindrical rod has a length of 5.96 cm and a diameter of 1.28 cm. It has a uniform magnetization of 5.59 × 103 A/m. What is its magnetic dipole moment? Number i Units

A metal strip 6.70 cm long, 0.850 cm wide, and 0.880 mm thick moves with constant velocity in the positive y direction through a uniform magnetic field B = 2.30 mT that is directed in the negative z direction. A potential difference of 4.60 μV is measured across the width of the strip. What is the magnitude of the velocity v of the strip?

pag Question 1: Magi A point charge of value q = 3.10μC has a speed of = 1.75 x 107-0.81 x 107k when it is at the point (0 cm, 0 cm, 0 cm). What is the magnetic field vector in component form at position (1cm, 1cm, 0cm)? Answer Magnetic Field Vector Mo = 4π *10-7 T.m² c.m S Clectric Potential from Point Charges

64.0 cm In an experiment, a particle that has a mass of 6.80 x 1027 kg enters a uniform and out-of- the-page direction magnetic field of 0.350 T and is bent in a semi-circle of diameter 64.0 cm as shown in the figure. If the particle is moving with a speed of 5.40 x 105 m/s, what is the magnitude and sign of particle's charge? O +1.64 x 10-19 C O-1.31 x 10-18 C +8.85 x 10-13 C + 1.31 x 10-18 C 100 O O Not enough information - 8.85 x 10-13 C + 6.10 x 10-18 C - 6.10 x 10-18 C +3.28 x 10-19 C 1.64 x 10-17 C - 3.28 x 10-1⁹ C

Tutorial Exercise In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.415 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 5.52 x 10-12 v, what is the magnitude of the Earth's magnetic field at this location?

A 0.68 T magnetic field is applied to a paramagnetic gas whose atoms have an intrinsic magnetic dipole moment of 1.3 x 1024 J/T. At what temperature will the mean kinetic energy of translation of the atoms equal the energy required to reverse such a dipole end to end in this magnetic field? Number i Units

A uniform magnetic field is perpendicular to the plane of a circular loop of diameter 11 cm formed from wire of diameter 2.1 mm and resistivity of 1.57 × 1082-m. At what rate must the magnitude of the magnetic field change to induce a 14 A current in the loop? Number i Units

Currents in the Heart. The body contains many small currents caused by the motion of ions in the organs and cells. Measurements of the magnetic field around the chest due to currents in the heart give values of about 10 uG. Although the actual currents are rather complicated, we can gain a rough understanding of their magnitude if we model them as a long, straight wire. If the surface of the chest is 5.0 cm from this current, how large is the current in the heart?