Electronics And Communication Test Preparations On Resistance and Power Part 1
Buy Now
Test Preparation on Electronics And Communication Test Preparations On Resistance and Power Part 1
1.
How do fixed resistors usually fail?
1
slowly over time
2
by increasing their value
3
by becoming an open circuit
4
by increasing their value and becoming an open circuit
2.
With Ohm's law, if voltage increases and resistance stays the same:
1
current remains the same
2
power decreases
3
current increases
4
resistance decreases
3.
Which formula shows a direct proportionality between power and voltage?
1
V = IR
2
P = VI
3
P = IR
4
I = V/R
4.
With 1 mA of current, what wattage rating should a 470 ohm resistor have?
1
1/4 watt
2
1/2 watt
3
1 watt
4
2 watts
Check your progress:
Right Ans
Wrong Ans
Not Attempted
Prev Question
Next Question
Show Answer
