Voltage and Current - General Questions (6)

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Voltage and Current - General Questions

41.

The battery symbol is:

A.
B.
C.
D.

Answer: Option B

Explanation:

No answer description available for this question

42.

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

43.

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

44.

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.

45.

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.

46.

What is the color code for a 220 omega 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).

Voltage and Current - General Questions (6)

Voltage and Current - General Questions

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