Electrical Engineering - Ohm's Law

Exercise :: Ohm's Law - General Questions

6. 

How much resistance is required to limit the current from a 12 V battery to 3.6 mA?

A. 3.3 k
B. 33 k
C. 2.2 k
D. 22 k

Answer: Option A

Explanation:

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

7. 

What is the voltage source for a circuit carrying 2 A of current through a 36 resistor?

A. 1.8 V
B. 18 V
C. 7.2 V
D. 72 V

Answer: Option D

Explanation:

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

8. 

What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?

A. 9.7
B. 97
C. 23
D. 230

Answer: Option D

Explanation:

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

9. 

How much voltage is needed to produce 2.5 A of current through a 200 resistor?

A. 50 V
B. 500 V
C. 80 V
D. 8 V

Answer: Option B

Explanation:

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

10. 

When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is

A. 14.4 V
B. 1.4 V
C. 100 V
D. 10 V

Answer: Option A

Explanation:

V = IR (Ohms Law)

= 12 X 10-3 X 1.2 X 10 3

= 12 X 1.2

= 14.4 V