1.
What is the color code for a 220 omega.gif 5% resistor?
A. Red, Red, Brown, Gold
B. Orange, Orange, Black, Gold
C. Red, Red, Black, Gold
D. Red, Red, Brown, Silver
Answer & Explanation
Answer: Option A
Explanation:
Resistor colour coding series:
Black 0
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
Gray 8
White 9
None 20%
Silver 10%
Gold 5%
Therefore Red, Red, Brown, Gold
2 2 101 5%
= 22 x 10 = 220 ohm 5% (tolerance).
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2.
If 60 J of energy are available for every 15 C of charge, what is the voltage?
A. 4 V
B. 60 V
C. 15 V
D. 0.25 V
Answer & Explanation
Answer: Option A
Explanation:
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3.
An atom’s atomic number is determined by the number of:
A. neutrons minus protons
B. protons
C. electrons
D. neutrons
Answer & Explanation
Answer: Option B
Explanation:
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4.
A voltage will influence current only if the circuit is:
A. open
B. insulated
C. high resistance
D. closed
Answer & Explanation
Answer: Option D
Explanation:
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5.
Which resistive component is designed to be temperature sensitive?
A. Thermistor
B. Rheostat
C. Potentiometer
D. Photoconductive cell
Answer & Explanation
Answer: Option A
Explanation:
No answer description available for this question.