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.
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- A long pair of insulated wires serves to conduct 20.5 A of dc current to and from an instrument. A). If the wires are of negligible diameter but are 2.8 mm apart, what is the magnetic field 10.0 cm from their midpoint, in their plane (Figure 1)? B). Compare to the magnetic field of the Earth of 5.0×10^−5T **Please show all steps** Thank you!In the circuit shown, when the switch is suddenly closed, the wire L is pulled toward the lower wire carrying current I. a) Which (? or ?) is the positive pole of the battery? Briefly explain. b) Draw i. the direction of the magnetic field due to the lower wire carrying current I at the location of the wire L and ii. the direction of the magnetic force on the wire L.The diagram below shows two long parallel wires, 1 & 2, each carrying a current of 98 A. The direction of the current for each wire is indicated in the diagram. The distance between the wires is 2.5 cm & the distance between wire 1 & point P is 6 cm. Use the standard cartesian coordinate system. 1 X P A.) At P, determine the directions of B₁ & B₂. direction of B₁ at P =- direction of B₂ at P => + ✓ B.) Determine the x & y components of B₁ at P. B1x = B₁y = C.) Determine the x & y components of B₂ at P. B₂x = B2y = вгу D.) Determine the magnitude & direction of Bnet at P. Bnet = direction of Bnet = to the HORIZONTAL in --- Choose quadrant --- V
- A circular loop of wire carries a steady current. Sketch the magnetic field lines in a plane perpendicular to the plane of the loop. Mark, which side of the loop is the north magnetic pole and which is the south magnetic pole.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.The diagram below represents an electron being fired at right angles towards a uniform magnetic field acting out of the page. a Copy the diagram and mark on it the continued path you would expect the electron to follow. b Which factors would alter the path radius of the electron as it travels? A stream of electrons travels in a straight line through a uniform magnetic field and between a pair of charged parallel plates, as shown in the diagram. 3.5 cm 500 V Calculate the: a magnitude of the electric field strength between the plates b speed of the electrons, given that the magnetic field is of strength 1.5 x 10 T.
- Item 1 The lightbulb in the circuit shown in the figure(Figure 1) has a resistance of 102 and consumes 9.7 W of power; the rod is 1.17 m long and moves to the left with a constant speed. The strength of the magnetic field is 2.3 T. Figure R O, O O O O O O O external magnetic 1 of 1 Part A Find the current in the circuit. Express your answer using two significant figures. ▸ View Available Hint(s) VE ΑΣΦΑ I = Submit Part B Find the speed of the rod. Express your answer using two significant figures. ► View Available Hint(s) 17| ΑΣΦ V = Submit Provide Feedback 2 ? ? A m/sQ7. If you were to move the north pole of a bar magnet into the front of your coil, what is the direction of the induced current when viewed from the front? To reach your conclusion, answer each of the following (see next page): Motion of the magnet as viewed from above. The arrows by the magnet indicate the direction in which the magnet moves, not necessarily the direction of B. a) Is the flux within the coil increasing, decreasing, or remaining constant? Explain in the space below. b) Viewing the coil “from the front", what is the direction of Bo within the coil? Done as an example to clarify perspective. "From the front" means looking into the coil. (X) (since B lines point away from "N") c) Viewing the coil “from the front", what is the direction Bind within the coil? d) What is the direction of Iind in the coil, when viewed from the front? e) Which way will the needle deflect?In the above problem (picture provided) with the loop placed in an increasing magnetic field out of the page, the current is flowing through the resistor in a direction from top towards the bottom. True or false? **previous problem on picture** A loop of highly conducting wire is placed in a magnetic field that is increasing out of the page (through the loop) at a rate of 1.80 T/s. If the loop has an area of 0.400 m^2, calculate the current flowing in amps through the 5.00 ohm resistor.
- please explain step by stepPlease solve the question correctly and also be sure to give the correct units. Thank you!Describe the origins of the magnetic field of the Earth. Describe what is meant by magnetic field strength and state its unit of measurement in SI units. Select one or more: a. Magnetic field strength is measured in amperes per meter squared. b. О с. d. The magnetic field strength B is the value of the current in the loop per unit area. The magnetic field of the earth is caused by electric currents inside the molten iron core of the Earth. The magnetic field strength B is defined as the force acting per unit current in a wire of unit length when the wire is perpendicular to the magnetic field lines. e. The magnetic field of the earth is caused by Earth's rotation around the Sun. ☐ f. Magnetic field strength is measured in Tesla.