To increase the current density in a wire of length l and diameter D, you can
a. decrease the potential difference between the two ends of the wire. b. increase the potential difference between the two ends of the wire. c. decrease the magnitude of the electric field in the wire. d. heat the wire to a higher temperature. e. combine both (b) and (d).
Question 2
The electron density in copper is 8.49 1028 electrons/m3 . The electron charge is e = -1.60 10-19 C. When a 1.00 A current is present in a copper wire with a 0.40 cm2 cross-section, the electron drift velocity, in m/s, with direction defined relative to the current density, is
a. -1.84 10-6.
b. +1.84 10-6.
c. -1.84.
d. -5.43 105.
e. +5.43 105.
Needle-nose pliers are used where there is limited access to a wire or pin that needs to be ...
When the exhaust is rich, the PCM applies a negative current into the pump cell.
The relationship of substrate con- version (as measured by optical density) to the amount of patient ...
Current Geopolitical Framework
Find the voltage, current and power for each resistor in the circuit below
Offset Method Plot of Land with Length Line