Electronics :: Voltage and Current

1.	What is the color code for a 220 5% resistor?
	A. Red, Red, Brown, Gold B. Orange, Orange, Black, Gold C. Red, Red, Black, Gold D. Red, Red, Brown, Silver 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: Option A Explanation: No answer description available for this question.

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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: Option B Explanation: No answer description available for this question.

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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: Option D Explanation: No answer description available for this question.

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5.	Which resistive component is designed to be temperature sensitive?
	A. Thermistor B. Rheostat C. Potentiometer D. Photoconductive cell Answer: Option A Explanation: No answer description available for this question.

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