Magnetic field strength inside a current-carrying coil will be greater if the coil encloses a
A) vacuum.
B) wooden rod.
C) glass rod.
D) rod of iron.
E) none of the above
Answer: D
You might also like to view...
Why should photons emitted by a hotter gas have, on average, shorter wavelengths than photons emitted by a cooler gas?
What will be an ideal response?
How did Tycho's detailed observations of Mars' brightness help show that its orbit could not be circular?
What will be an ideal response?
A parallel-plate capacitor has plates of area 0.40 m2 and plate separation of 0.20 mm. The capacitor is connected across a 9.0-V potential source. (?0 = 8.85 × 10-12 C2/N ? m2 )
(a) What is the magnitude of the electric field between the plates? (b) What is the capacitance of the capacitor? (c) What is the magnitude of the charge on each plate of the capacitor?
In recent reports,(315-320,324) overfishing is cited as a cause for species' numerical collapse and possible forthcoming extinction. In b. and c., explain the parallelism or lack of parallelism with fishery management. a. What does this imply about human management of fishery resources? Cite specificinstances and consequences
b. Consider, for example, politicians dealing with mining. c. Consider, for example, politicians dealing with forestry.