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Electrical Engineering - Ohm's Law

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Exercise

"Actions speak louder than words."
- (Proverb)
1. 

An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately

A. 385
B. 38.5
C. 3.1
D. 31

2. 

If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor?

A. 8.25 V
B. 82.5 V
C. 14.6 V
D. 146 V

3. 

The formula to find I when the values of V and R are known is

A. I = VR
B. I = R/V
C. V = IR
D. I = V/R

4. 

A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?

A. 2 mA
B. 2.2 mA
C. 214 mA
D. 21.4 mA

5. 

Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance?

A. 27.2 mA
B. 59 mA
C. 5.9 mA
D. 590 mA




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