EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Chapter 28, Problem 4Q
To determine
Whether the current in the upper wire hold the lower wire in suspension against gravity, and the conditions will the wire be in equilibrium.
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The force per meter between the two wires of a jumper cable being used to start a stalled car is 0.253 N/m.
(a) What is the current (in A) in the wires, given they are separated by 2.10 cm?
A
(b) Is the force attractive or repulsive?
O The force is repulsive because the currents are in the same direction.
O The force is attractive because the currents are in opposite directions.
O The force is attractive because the currents are in the same direction.
The force is repulsive because the currents are in opposite directions.
A current balance is constructed as follows: part of a wire, 10.0 cm long, is placed on a plate of an electronic balance, as shown in the figure below. This wire is connected to a current source (power supply) and a long horizontal wire, parallel to the wire on the platter, positioned just above it. The distance between the central axis of the two wires is 2.00 cm. When the source is turned on, the scale reading increases by 7.00 mg. What is the current in the wire (at A)? If the sensitivity of the balance is 0.100 mg, what is the minimum current that can be detected (in mA to one decimal place)?
A long, straight wire carrying a current of 2.6 A is placed in the plane of a conducting strip of width 8.0 cm (see figure below). The strip carries a current of 4.4 A. The distance from the wire to the near edge of the strip is 4.0 cm. Calculate the attractive force per unit length between the wire and the strip. (Enter the magnitude.) N/m
Chapter 28 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 28 - The magnetic field due to current in wires in your...Ch. 28 - Compare and contrast the magnetic field due to a...Ch. 28 - Two insulated long wires carrying equal currents I...Ch. 28 - Prob. 4QCh. 28 - (a) Write Ampres law for a path that surrounds...Ch. 28 - Use the Biot-Savart law to show that the field of...Ch. 28 - Prob. 9QCh. 28 - Why does twisting the lead-in wires to electrical...Ch. 28 - Compare the Biot-Savart law with Coulombs law....Ch. 28 - Will a magnet attract any metallic object, such as...
Ch. 28 - An unmagnetized nail will not attract an...Ch. 28 - Prob. 18QCh. 28 - Prob. 5PCh. 28 - (II) A third wire is placed in the plane of the...Ch. 28 - Prob. 18PCh. 28 - (II) Let two long parallel wires, a distance d...Ch. 28 - (II) Repeat Problem 19 if the wire at x = 0...Ch. 28 - Prob. 36PCh. 28 - (II) A wire, in a plane, has the shape shown in...Ch. 28 - (II) A circular conducting ring of radius R is...Ch. 28 - Prob. 40PCh. 28 - Prob. 56GPCh. 28 - A rectangular loop of wire carries a 2.0-A current...Ch. 28 - Prob. 60GPCh. 28 - A 175-g model airplane charged to 18.0 mC and...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The accompanying figure shows a cross-section of a long, hollow, cylindrical conductor of inner radius r1= 3.0 cm and outer radius r2= 5.0 cm. A 50-A current distributed uniformly over the cross-section flows into the page. Calculate the magnetic field at r = 2.0 cm. r = 4.0 cm. and r = 6.0 cm.arrow_forwardThe current in a long solenoid of radius 3 cm and 20 turns cm is varied with time at a rate of 2 A/s. Find the electric field at a distance of 4 cm from die center of the solenoid.arrow_forwardA 2.50-m segment of wire supplying current to the motor of a submerged submarine carries 1000 A and feels a 4.00-N repulsive force from a parallel wire 5.00 cm away. What is the magnitude of the current in the other wire?arrow_forward
- How do you conceptualize how far from the center of a wire carrying a 2.0 A current does the magnitude field that results from the current have a magnitude of 4.0 *10^-4T?arrow_forwardTwo long straight wires are parallel to each other and carry currents of different magnitudes. If the amount of current flowing through each wire is doubled, the magnitude of the force between the wires will be:arrow_forwardAs shown below, a horizontal 4.4 m long wire with a mass of 0.74 kg is carrying a current. The wire is completely immersed in a uniform 2.3 T B-field that is perpendicular to the current direction and as a result the wire levitates. Determine the current through the wire and the direction of the external B-field. I = Direction of external B-field Choose direction ✓arrow_forward
- A repulsive force is produced between two parallel wires. The relative directions of the currents in the wires cannot be determined from the information given. depend on the charge carriers in the wires. are in the opposite direction. O are in the same direction.arrow_forwardTwo long, parallel wires carry currents of different magnitudes. If the amount of current in one of the wires is tripled, what happens to the magnitude of the force that each wire exerts on the other? It is increased by a factor of 9 It is increased by a factor of 4 O It is decreased by a factor of 1/9 O It is increased by a factor of 3arrow_forwardTwo long, parallel wires, each with a mass per unit length of 48 g/m, are supported in a horizontal plane by 6.0-cm-long strings, as shown in the figure below. Each wire carries the same current I, causing the wires to repel each other so that the angle between the supporting strings is 16⁰. 6.0 cm (a) Are the currents in the same or opposite directions? same direction opposite direction not enough information to decide (b) Determine the magnitude of each current. A 0arrow_forward
- Two parallel long wires currents in the same direction. One wire carries a current of 2A, whereas the other wire carries a current of 4A. The wires are 4cm apart. Calculate the force per unit length in N/m of one wire on the other one.arrow_forwardThe force per meter between the two wires of a jumper cable being used to start a stalled car is 0.225 N/m. What is the current in the wires, given they are separated by 2.00 cm? Is the force attractive or repulsive?arrow_forwardThe figure shows a cross section of three parallel wires each carrying a current of 24 A. The currents in wires B and C are out of the paper, while that in wire A is into the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 4.0-m length of wire C?arrow_forward
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