The voltage across a 2.2 k? resistor is ___ if 3 mA of current is flowing throug

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Home ‣ Electronics ‣ Ohm's Law Comments

Question
The voltage across a 2.2 kΩ resistor is ___ if 3 mA of current is flowing through it.
Options
A. 6.6 V
B. 7.33 V
C. 1.4 V
D. 0.8 V

Correct Answer

6.6 V

Ohm's Law problems

Search Results

1.

The voltage supplying the current in the given circuit is _____.
Options
A. 2.5 V
B. 25 V
C. 250 V
D. 2.5 kV

Discuss

Correct Answer: 25 V

Explanation:

V = IR

= 250 x 10^-6 x 100 x 10^3

= 250 x 100 x 10^(-6+3)

= 250 x 100 x 10^-3

= 25 x 1000 x 10^-3

= 25 x 10^3 x 10^-3

= 25 x 10^0

= 25 x 1 [Anything power 0 is 1]

= 25 volts.

2. The power is ___ if 200 J of energy are used in 10 s.
Options
A. 2 W
B. 5 W
C. 20 W
D. 50 W

Discuss

Correct Answer: 20 W

3. The number of joules used in 1 second is always equal to the number of _______.
Options
A. siemens
B. coulombs
C. amperes
D. watts

Discuss

Correct Answer: watts

4. Resistance and current are _________.
Options
A. directly proportional
B. inversely proportional
C. not related
D. similar to voltage

Discuss

Correct Answer: inversely proportional

5.

The power rating for the resistor in the given circuit should be at least ______.
Options
A. 1/4 W
B. 1/2 W
C. 1 W
D. 2 W

Discuss

Correct Answer: 2 W

6. The current is ___ if the voltage across a 5 kΩ resistor is 25 V.
Options
A. 200 mA
B. 125 mA
C. 75 mA
D. 5 mA

Discuss

Correct Answer: 5 mA

7. The phase angle will decrease in a series RL circuit if the inductance is increased.
Options
A. True
B. False

Discuss

Correct Answer: False

8. As frequency decreases in a parallel RL circuit the impedance also decreases.
Options
A. True
B. False

Discuss

Correct Answer: True

9. The current lags the source voltage in a series RL circuit.
Options
A. True
B. False

Discuss

Correct Answer: True

10.
The circuit in the given circuit is a low-pass filter.
Options
A. True
B. False

Discuss

Correct Answer: True

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The voltage across a 2.2 kΩ resistor is ___ if 3 mA of current is flowing through it.

Ohm's Law problems

Search Results

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