Electronics - Resistance and Power

Why Electronics Resistance and Power?

In this section you can learn and practice Electronics Questions based on "Resistance and Power" 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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Where can I get Electronics Resistance and Power Interview Questions and Answers (objective type, multiple choice)?

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

How to solve Electronics Resistance and Power problems?

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

Exercise :: Resistance and Power - General Questions

1. 

The resistivity of copper is:

A. 9.9 omega.gif
B. 10.7 omega.gif
C. 16.7 omega.gif
D. 17.0 omega.gif

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

2. 

How do fixed resistors usually fail?

A. slowly over time
B. by increasing their value
C. by becoming an open circuit
D. by increasing their value and becoming an open circuit

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

3. 

With Ohm's law, if voltage increases and resistance stays the same:

A. current remains the same
B. power decreases
C. current increases
D. resistance decreases

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

4. 

Which formula shows a direct proportionality between power and voltage?

A. V = IR
B. P = VI
C. P = IR
D. I = V/R

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

5. 

With 1 mA of current, what wattage rating should a 470 ohm resistor have?

A. 1/4 watt
B. 1/2 watt
C. 1 watt
D. 2 watts

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.