What magnetic fields are created in an electric motor and how does current translate into force? Also how can we use the right hand rule to explain it?
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- Which of these is true about magnetic fields? Select one: O They will cause a static electric charge to accelerate. O They always cause a moving charge to accelerate. O They are stronger than electric fields. O They sometimes cause a moving charge to accelerate. Which of these creates a magnetic field? i. A stationary charge. A changing electric field. iii. A current in a wire. iv. A moving charge. ii. Select one: O (i), (ii), and (iv) only (1) only (), (ii), and (iv) only OAll of these.Q ☆ 15860544 Chapter 19 Ho Due Dates > Chapter 19 Homework O Resources ve Up? A doubly ionized molecule (i.e., a molecule lacking two electrons) moving in a magnetic field experiences a magnetic force of 5.89 x 10-16 N as it moves at 229 m/s at 77.1° to the direction of the field. Find the magnitude of the magnetic field. T about us careers privacy policy terms of use contact us help 87°F Rain coming*** 28. A bar is moved along conducting rails at a constant 2.0 m/s in the presence of a 1-tesla magnetic field into the page, as shown. A 4-ohm resistor is connected into the circuit. 1 T 4Ω 2 m/s 0.1 m a) What current flows in the loop? b) What force is required to maintain the constant 2 m/s velocity? c) How much work must be done by this force in 1 second? d) Calculate the power dissipated by the resistor and compare the energy dissipated by the resistor with the work done in this same time. +
- 1.) When a particle moves under the influence of a magnetic field, the speed of the particle remains constant. Explain why the magnetic force doesn’t change the speed. Why does this also imply that magnetic fields cannot do work?Can the left-hand rule be used to determine the direction of rotation of an electric motor? Why or why not?A 10 m long solenoid contains 284 turns of wire and can generate a magnetic field of 0.01 T from a current of 2.8 A. If the solenoid is broken in half, the field would be expected to... A )Stay the same B Double C)Quarter D) Halve