A Nichrome wire has a radius of 0.50 mm and a resistivity of 1.5 × 10^-6 W×m. If the wire carries a current of 1.0 A, what is the potential difference per unit length along this wire?
a. 1.9 V/m
c. 1.6 V/m
b. 0.95 V/m
d. 0.003 V/m
A
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An ac series circuit consists of a voltage source of frequency 60 Hz and voltage amplitude V, a 533-? resistor, and a capacitor of capacitance 6.4 µF
What must be the source voltage amplitude V for the average electrical power consumed in the resistor to be 989 W? There is no inductance in the circuit.
Two particles that will be deflected by a magnetic field are __________ and __________
Fill in the blank(s) with correct word
Two parallel conductors are carrying currents in the same direction. The currents are non-zero and not necessarily equal. The magnitude of the magnetic field midway between them is 40 mT. If one of the currents then has its direction reversed, what is the resulting magnitude of the magnetic field midway between them?
a. It could be any value. c. a value less than 40 mT b. 40 mT d. a value greater than 40 mT
An inductor has 1000 turns/m and an internal volume of 30 cm3 . What is its inductance?
a. 0.38 H c. 3.8 mH b. 38 mH d. Insufficient information is given.