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Questions Magnetic Force 1. Use Fleming's Left Hand Rule to predict the direction of movement of the current-carrying wire in the magnetic field below: IB

Questions Magnetic Force 1. Use Fleming's Left Hand Rule to predict the direction of movement of the current-carrying wire in the magnetic field below: IB

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Questions Magnetic Force 1. Use Fleming's Left Hand Rule to predict the direction of movement of the current-carrying wire in the magnetic field below: 2. Consider the situation below: | = 0.15A %3D L = 0.50m 63° B = 40mT a) Calculate the magnitude of magnetic force experienced by the wire. b) The wire is placed at an angle of 0° to the magnetic field. Calculate the magnitude of magnetic force experienced by the wire at this angle. c) State the angle between the magnetic field and the wire that will generate the largest magnetic force.
Transcribed Image Text:Questions Magnetic Force 1. Use Fleming's Left Hand Rule to predict the direction of movement of the current-carrying wire in the magnetic field below: 2. Consider the situation below: | = 0.15A %3D L = 0.50m 63° B = 40mT a) Calculate the magnitude of magnetic force experienced by the wire. b) The wire is placed at an angle of 0° to the magnetic field. Calculate the magnitude of magnetic force experienced by the wire at this angle. c) State the angle between the magnetic field and the wire that will generate the largest magnetic force.
Questions Continued 3. The diagram below shows two long, straight parallel wires. These wires are carrying current into the page. a) Draw the magnetic field that surrounds both wires b) State whether these wires are attracted or repelled by each other. 4. State the definition of the Ampere. A student builds a model motor. Direct current is fed through the loops of wire, which are placed within a magnetic field as shown. N The motor will start to spin. Use Fleming's Left Hand Rule to determine the direction of spin. Questions Continued 6. A student carried out an experiment to investigate how the current through a solenoid affects the magnetic field strength inside the solenoid. The following apparatus is used: Solenoid Laptop Magnetic Field Sensor Data Logger A Variable Power Supply The following data is collated: В (mT) Average B I (A) ДВ (mT) (mT) B1 B2 Вз 0.5 0.31 0.33 0.29 0.6 0.38 0.39 0.37 0.7 0.44 0.42 0.46 0.8 0.54 0.54 0.42 0.9 0.57 0.57 0.57 1.0 0.65 0.62 0.62 a) Complete the table to include the average value of B and AB. b) Plot a graph of I(A) (x-axis) against B(mT) (y-axis). c) The expression for the magnetic field strength inside a solenoid is: B = HonI Where Ho is the permeability of free space and is a constant value of Ho = 1.257x10-6mkgs-2A-2 n is the number of turns per meter. Use the gradient of the graph to determine the number of coils per meter for this solenoid. EXTENSION d) Plot appropriate error bars and other lines of best fit to determine the error in your value for n. SI 5.
Transcribed Image Text:Questions Continued 3. The diagram below shows two long, straight parallel wires. These wires are carrying current into the page. a) Draw the magnetic field that surrounds both wires b) State whether these wires are attracted or repelled by each other. 4. State the definition of the Ampere. A student builds a model motor. Direct current is fed through the loops of wire, which are placed within a magnetic field as shown. N The motor will start to spin. Use Fleming's Left Hand Rule to determine the direction of spin. Questions Continued 6. A student carried out an experiment to investigate how the current through a solenoid affects the magnetic field strength inside the solenoid. The following apparatus is used: Solenoid Laptop Magnetic Field Sensor Data Logger A Variable Power Supply The following data is collated: В (mT) Average B I (A) ДВ (mT) (mT) B1 B2 Вз 0.5 0.31 0.33 0.29 0.6 0.38 0.39 0.37 0.7 0.44 0.42 0.46 0.8 0.54 0.54 0.42 0.9 0.57 0.57 0.57 1.0 0.65 0.62 0.62 a) Complete the table to include the average value of B and AB. b) Plot a graph of I(A) (x-axis) against B(mT) (y-axis). c) The expression for the magnetic field strength inside a solenoid is: B = HonI Where Ho is the permeability of free space and is a constant value of Ho = 1.257x10-6mkgs-2A-2 n is the number of turns per meter. Use the gradient of the graph to determine the number of coils per meter for this solenoid. EXTENSION d) Plot appropriate error bars and other lines of best fit to determine the error in your value for n. SI 5.
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