Electrical Engineering - Voltage, Current and Resistance

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Exercise : Voltage, Current and Resistance - General Questions
1.
Materials with lots of free electrons are called
conductors
insulators
semiconductors
filters
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
The unit of electrical charge is the
coulomb
joule
volt
watt
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
Current flows in a circuit when
a switch is opened
a switch is closed
the switch is either open or closed
there is no voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
The minimum resistance value for a blue, gray, red, silver resistor is
612
6,120
6,800
6,460
Answer: Option
Explanation:

Because of 10% tolerance(last color silver), this resistance may vary 10% of 6800.

Minimum resistance value = 6800 - 680 = 6120

Maximum resistance value = 6800 + 680 = 7480


5.
The maximum resistance value for a brown, red, yellow, gold resistor is
126,000
126,600
114,000
132,000
Answer: Option
Explanation:
No answer description is available. Let's discuss.