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Electrical Engineering - Voltage, Current and Resistance


Exercise

"Nothing in life is to be feared, it is only to be understood."
- Marie Curie
1. 

Materials with lots of free electrons are called

A. conductorsB. insulators
C. semiconductorsD. filters

2. 

The unit of electrical charge is the

A. coulombB. joule
C. voltD. watt

3. 

Current flows in a circuit when

A. a switch is opened
B. a switch is closed
C. the switch is either open or closed
D. there is no voltage

4. 

The minimum resistance value for a blue, gray, red, silver resistor is

A. 612
B. 6,120
C. 6,800
D. 6,460

5. 

The maximum resistance value for a brown, red, yellow, gold resistor is

A. 126,000
B. 126,600
C. 114,000
D. 132,000




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