Exercise: Voltage And Current

Questions for: Voltage And Current

The unit for resistance is the ___ and the symbol for resistance is ___.
A:
ampere, R
B:
ohm, R
C:
volt, Q
D:
ohm, J
Answer: B
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A ___ resistor has color bands of yellow, violet, yellow, gold.
A:
470 omega.gif 5%
B:
5.7 Momega.gif 5%
C:
37 komega.gif 5%
D:
470 komega.gif 5%
Answer: D
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All resistors can be placed into one of two main categories: ___ or ___.
A:
carbon film, metal film
B:
fixed, variable
C:
wire wound, carbon-composition
D:
insulator, semiconductor
Answer: B
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An atom with more electrons than protons is ___.
A:
a positive ion
B:
a balanced atom
C:
a negative ion
D:
not possible
Answer: C
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An atom of a semiconductor has _______________ electrons in the valence shell.
A:
4
B:
8
C:
2
D:
0
Answer: A
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