A capacitor is charging in a simple RC circuit with a dc battery. Which one of the following statements about this capacitor is accurate? * There is no magnetic field between the capacitor plates because no charge travels between the plates. There is a magnetic field between the capacitor plates, even though no charge travels between them, because the magnetic flux between the plates is changing. The magnetic field between the capacitor plates is increasing with time because the charge on the plates is increasing. There is a magnetic field between the capacitor plates because charge travels between the plates by jumping from one plate to the other. There is a magnetic field between the capacitor plates, even though no charge travels between them, because the electric flux between the plates is changing.

Bar Magnet Coil A Coil B The figure above shows a permanent bar magnet placed between two electromagnetic coils of wire. The direction of the current in the wires is shown by the arrows. Assuming that electromagnetic coils do not effect each other, Which of the following statements best describes the effect of the bar magnet on the two coils of wire? Coil A is repelled to the left and Coil B is repelled to the right. Coil A is attracted to the right and Coil B is attracted to the left. O Coil A is repelled to the left and Coil B is attracted to the left. O Coil A is attracted to the right and Coil B is repelled to the right. ONeither Coil A nor Coil B is effected by the bar magnet.

36. *There is a uniform magnetic field of magnitude 2.2 T in the +z direction. Find the force on a particle of charge -1.2 nC if its velocity is (a) 1.0 km/s in the y-z plane in a direction that makes an angle of 40° with the z axis and (b) 1.0 km/s in the x-v plane in a direction that makes an angle of 40° with the x axis.

78. * A student in a physics lab investigates the opera- tion of an AC generator. She collects data on the emf of the generator as a function of time (Figure 25-76). The generator consists of a 200-turn coil that is spun in a strong magnetic field. The coil has a cross-sectional area of 25.0 cm². (a) Determine the frequency, f (Hz), of the generated current. (b) Determine the frequency, f (Hz), and the angular frequency, w (rad/s), of the rotation of the coil. (c) Find the magnitude of the magnetic field. DAAN 10.0 0.0 -10.0 (ALI) 3 Figure 25-76 Problem 78.

c) Write the Kirchhoff's potential difference rule for left and right loops by drawing your chosen current directions and loop directions. El R1 R2 R3 -82

View Policies Current Attempt in Progress Magnetic resonance imaging (MRI) is a medical technique for producing "pictures" of the interior of the body. The patient is placed within a strong magnetic field. One safety concern is what would happen to the positively and negatively charged particles in the body fluids if an equipment failure caused the magnetic field to be shut off suddenly. An induced emf could cause these particles to flow, producing an electric current within the body. Suppose the largest surface of the body through which flux passes has an area of 0.037 m² and a normal that is parallel to a magnetic field of 1.9 T. Determine the smallest time period during which the field can be allowed to vanish if the magnitude of the average induced emf is to be kept less than 0.0091 V. B (out of screen) i e Textbook and Media Save for Later Units Attempts: 0 of 6 used Submit Ac

Question 8