Chapter 4: Q16DQ (page 981)
Does Faraday’s law say that a large magnetic flux induces a large emf in a coil? Explain.
Short Answer
No, faraday’s law doesn’t state that a large magnetic flux induces a large emf in a coil.
Chapter 4: Q16DQ (page 981)
Does Faraday’s law say that a large magnetic flux induces a large emf in a coil? Explain.
No, faraday’s law doesn’t state that a large magnetic flux induces a large emf in a coil.
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Get started for freeA 5.00-A current runs through a 12-gauge copper wire (diameter
2.05 mm) and through a light bulb. Copper hasfree electrons per
cubic meter. (a) How many electrons pass through the light bulb each
second? (b) What is the current density in the wire? (c) At what speed does
a typical electron pass by any given point in the wire? (d) If you were to use
wire of twice the diameter, which of the above answers would change?
Would they increase or decrease?
Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. These cyclotrons typically accelerate (the hydride ion, which has one proton and two electrons) to an energy of This ion has a mass very close to that of a proton because the electron mass is negligible about of the proton’s mass. A typical magnetic field in such cyclotrons is .(a) What is the speed of a ? (b) If the has energy what is the radius of this ion’s circulator orbit?
You want to produce three 1.00-mm-diameter cylindrical wires,
each with a resistance of 1.00 Ω at room temperature. One wire is gold, one
is copper, and one is aluminum. Refer to Table 25.1 for the resistivity
values. (a) What will be the length of each wire? (b) Gold has a density of.
What will be the mass of the gold wire? If you consider the current price of gold, is
this wire very expensive?
Which of the graphs in Fig. Q25.12 best illustrates the current I in a real resistor as a function of the potential difference V across it? Explain.
Questions: A conductor that carries a net charge has a hollow, empty cavity in its interior. Does the potential vary from point to point within the material of the conductor? What about within the cavity? How does the potential inside the cavity compare to the potential within the material of the conductor?
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