Circuit Lab B/C

[azboy1910]

1) Which of the famous scientists in the rules found that electricity could be produced chemically?
2) List 4 properties of an ideal op-amp.
3)
Find V₁ and V₂.

Click to Show Answer

1) Alessandro Volta 
2) It has zero offset voltage, zero output impedance, infinite bandwidth, and infinity input impedance.  

===Number 3 Below=== 



  

V1 = 20 V 
V2 = 40 V

[Krish2007]

1) Which of the famous scientists in the rules found that electricity could be produced chemically?
2) List 4 properties of an ideal op-amp.
3)
Find V₁ and V₂.

Click to Show Answer

1) Alessandro Volta 
2) It has zero offset voltage, zero output impedance, infinite bandwidth, and infinity input impedance.  

===Number 3 Below=== 



  

V1 = 20 V 
V2 = 40 V

All Correct, your turn!

[azboy1910]

1. Explain briefly what a solenoid is and what it does when connected to a battery (For instance, for a resistor "opposes current," could be an answer).
2. Who invented this device?
3. Find voltage R_T in the following circuit.

[UTF-8 U+6211 U+662F]

1. Explain briefly what a solenoid is and what it does when connected to a battery (For instance, for a resistor "opposes current," could be an answer).
2. Who invented this device?
3. Find voltage R_T in the following circuit.

Click to Show Answer

1. A solenoid is a coil of wire designed to create a magnetic field when current is run through it. A solenoid opposes changes in current.
2. Faraday?
3. 9.62 ohms

[azboy1910]

1. Explain briefly what a solenoid is and what it does when connected to a battery (For instance, for a resistor "opposes current," could be an answer).
2. Who invented this device?
3. Find voltage R_T in the following circuit.

Click to Show Answer

1. A solenoid is a coil of wire designed to create a magnetic field when current is run through it. A solenoid opposes changes in current.
2. Faraday?
3. 9.62 ohms

Click to Show Answer

1. Correct 
2. I believe Ampere invented the solenoid. 
3. Correct 

Your turn!

[UTF-8 U+6211 U+662F]

Define impedance and explain what it is used for.

[azboy1910]

Define impedance and explain what it is used for.

Click to Show Answer

Impedance is the complete opposition of the flow of current, unlike resistance, which only slows the speed of the flow of current. It is commonly described as the "resistance to AC current." It is used in capacitors and inductors in the form of reactance, which are used in a variety of appliances, as well as numerous other applications.

[UTF-8 U+6211 U+662F]

Define impedance and explain what it is used for.

Click to Show Answer

Impedance is the complete opposition of the flow of current, unlike resistance, which only slows the speed of the flow of current. It is commonly described as the "resistance to AC current." It is used in capacitors and inductors in the form of reactance, which are used in a variety of appliances, as well as numerous other applications.

Yep, your turn!

[azboy1910]

1. Consider a parallel-plate capacitor with a capacitance of 5 mF and plate area of 30 cm, connected to a 1.5-volt battery. Calculate the energy density of the capacitor.
2. Describe what happens to an LED when it exceeds its forward current rating.
3. Find the voltage at nodes 3 and 4.

[ThomasL]

Click to Show Answer

1. (assuming 2 sigfigs) 3.5e11 J/m^3
2. Overheats and burns up?
3. V3 = 10 V, V4 = 7.5 V

First circuit question marathon Hope that's right.