Electronics - Voltage and Current

Why Electronics Voltage and Current?

In this section you can learn and practice Electronics Questions based on "Voltage and Current" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

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Here you can find objective type Electronics Voltage and Current questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve Electronics Voltage and Current problems?

You can easily solve all kind of Electronics questions based on Voltage and Current by practicing the objective type exercises given below, also get shortcut methods to solve Electronics Voltage and Current problems.

Exercise :: Voltage and Current - General Questions

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: 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). 


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. Let us discuss.

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. Let us discuss.

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. Let us discuss.

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. Let us discuss.

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