The combination of two separated point charges of opposite sign but equal magnitude is called an electric:
a. magnapole.
c. quadrapole.
b. dipole.
d. monopole.
B
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Nichrome wire, often used for heating elements, has resistivity of 1.0 × 10-6 ? ? m at room temperature. What length of No. 30 wire (of diameter 0.250 mm) is needed to wind a resistor that has 50 ohms at room temperature?
A) 3.66 m B) 2.45 m C) 0.61 m D) 6.54 m E) 22.4 m
Homogeneous mixtures are also called ______________
Fill in the blank(s) with correct word
Resolution: Even with perfect optics, what is the resolution limit (in radians) of the Hubble Space Telescope when it is focusing light of wavelength 400 nm? The mirror diameter is 2.4 m.
Fill in the blank(s) with the appropriate word(s).
Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor?
a. increase charge b. decrease charge c. increase capacitance d. decrease capacitance