A neutral metal bar is moving at constant velocity to the right through a region where there is a uniform magnetic field pointing out of the page. The magnetic field is produced by some large coils which are not shown on the diagram. Represent in a diagram that best describes the state of the metal bar?
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A neutral metal bar is moving at constant velocity to the right through a region where there is a uniform magnetic field pointing out of the page. The magnetic field is produced by some large coils which are not shown on the diagram. Represent in a diagram that best describes the state of the metal bar?
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- A 2.60 N metal bar, 0.850 m long and having a resistance of 10.0 ohms, rests horizontally on conducting wires connecting to the circuit shown in figure 1. The bar is in a uniform, horizontal, 1.60 T magnetic field and is not attached to the wires in the circuit. What is the accleration of the bar just after switch S is closed?Assume that I = 5.2 A and d = 2.4 cm. Figure d 1 of 1 Part A What is the strength of the magnetic field at the center of the loop in the figure? (Figure 1) Express your answer to two significant figures and include the appropriate units. B = Submit Part B O μᾶ Value Submit Request Answer out of the screen O into the screen Provide Feedback What is the direction of the magnetic field at the center of the loop? Units Request Answer ww ?The North Pole of a bar magnet enters a coil of wire. What are the directions of the induced current and magnetic field? Draw a sketch of the situation.
- A rectangular loop is placed near a long straight current-carrying wire as shown in the figure. a. Assume that we define step vectors around the loop to point counterclockwise. Is the magnetic flux ФB through the loop positive or negative? b. Calculate the magnetic flux in terms of I = |Ivector|, d, L, and W. (Hints: The magnetic field is not constant over the loop's face, so we have to actually integrate to calculate the flux. Divide the loop into thin strips. You should find that the answer is proportional to ln(d+W) / d.) c. Let the loop have resistance R. Find an expression for the current flowing in the loop as a function of dI / dt. d. If the magnitude of the current flowing in the wire is decreasing, what is the direction in which the current flows in the loop?A charged particle enters a magnetic field from the left in the positive x-direction as shown below. The particle curves downward on the page in the negative y-direction as it enters the field. What direction would an electric field need to be added to the magnetic field region so that the particle travels straight through the magnetic field in the positive x-direction without changing direction? The electric field would be directed in the positive x-direction. The electric field would be directed in the positive y-direction. The electric field would be directed in the negative y-direction. The electric field would be directed in the positive z-direction.Figure 3 shows a straight wire carrying a current in upward direction. The wire is placed near a wire loop. For each case described below, answer the following questions: a) What is the direction of the magnetic flux through the loop? b) Is the magnitude of the flux through the loop increasing or decreasing with time? c) What is the direction of the magnetic field produced by the induced current in the loop? d) What is the direction of the current induced in the loop? Case 1: The current is increasing. Case 2: The current is decreasing. Case 3: The current is constant but the loop is being pulled away from the straight wire.
- Two very long wires are parallel to each other separated by a distance d. The same current flows through each wire but in opposite directions. See the arrows in the diagram. Let I = 1 Amp and d = 0.1 meter. a) What is the direction of the net magnetic field due to the two, long wires in the space between the wires? Explain your answer. b) Calculate the magnitude of the net field at point P, which is half-way between the wires. c) Calculate the magnitude of the magnetic force per unit length due to wire #1 on #2. d) Determine the direction of the force calculated in part (c) and explain your answer.Can you answer problem 10? Can you also provide a short explanation for the answer you chose?In the diagram below, a bar magnet moves toward a solenoid. Use Lenz's а. Law to find the direction of the induced current in the solenoid and then determine the direction of current flow through the resistor connected to the solenoid. Motion N The direction of the current through the resistor is: A. upward B. downwards In the diagram below, a solenoid moves toward a bar magnet. Use Lenz's Law to find the direction of b. the induced current in the solenoid and then determine the direction of current flow through the resistor connected to the solenoid. Motion The direction of the current through the resistor is: O A. upwards B. downwards
- A straight bar magnet, 4 cm long, initially has a north pole on the right side and south pole on the left. If kyou cut the magnet in half, what would be the right half be, possibly in the new cut down version of magnet, the right is?Needs Complete typed solution with 100 % accuracy.Following conventional current flow, what would be the direction of the induced magnetic field and the direction of the current for the two situations, a) right after the switch is closed b) the switch has been closed for a long time and now right after the switch has been opened? See figure below. The figure on the left is a battery connected to a coil. The figure on the right is a coil connected to an amp meter. Determine which direction the amp meter shows current for each situation.