Chapter 29: Q83P (page 863)
In unit-vector notation, what is the magnetic field at pointPin Fig. 29-86 ifand? (Note that the wires are notlong.)
Short Answer
The net magnetic field at point P is .
Chapter 29: Q83P (page 863)
In unit-vector notation, what is the magnetic field at pointPin Fig. 29-86 ifand? (Note that the wires are notlong.)
The net magnetic field at point P is .
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Get started for freeIn Fig 29-59, length a is(short) and current is. (a) What is the magnitude (into or out of the page) of the magnetic field at point P? (b) What is the direction (into or out of the page) of the magnetic field at point P?
Figure 29-67 shows a cross section across a diameter of a long cylindrical conductor of radius carrying uniform current . What is the magnitude of the current’s magnetic field at radial distance (a) 0 (b) 1.00 cm, (c) 2.00 cm (wire’s surface), and (d) 4.00 cm?
Figure a shows, in cross section, three current-carrying wires that are long, straight, and parallel to one another. Wires 1 and 2 are fixed in place on an xaxis, with separation d. Wire 1 has a current of, but the direction of the current is not given. Wire 3, with a current ofout of the page, can be moved along the xaxis to the right of wire 2. As wire 3 is moved, the magnitude of the net magnetic forceon wire 2 due to the currents in wires 1 and 3 changes. The xcomponent of that force is F2xand the value per unit length of wire 2 is. Figure bgivesversus the position xof wire 3. The plot has an asymptoteasThe horizontal scale is set by. (a) What are the size of the current in wire 2 and (b) What is the direction (into or out of the page) of the current in wire 2?
A solenoid having a length ofand a diameter ofcarries a current of. Calculate the magnitude of the magnetic field inside the solenoid.
In Figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length . Each wire carries, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3. In unit vector notation, what is the net magnetic force per meter of wirelengthon wire 4?
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