Circuit Electronics » Parallel Electronic Circuits

In a parallel circuit, why doesn't the voltage take the fastest path to the other side of the battery?

admin — Sun, 01 Aug 2010 12:01:37 +0000

In other words what prompts it to go through the complete circuit without going straight to the other battery terminal?
Just started reading up on electronic and digital circuits for the summer and this question has been bothering me.

Physics Circuit Problems HELPP!!?

admin — Sat, 22 May 2010 09:36:23 +0000

A 9.1 V battery is connected to a 6.2 pF parallel-plate capacitor. What is the magnitude of the charge on each plate?

Two devices with capacitances of 21.6 µF and 5.2 µF are each charged with separate 120 V power supplies. Calculate the total energy stored in the two capacitors.

The operating potential difference of a light bulb is 120 V. The power rating of the bulb is 45 W.

(a) Find the current in the bulb.
1 A
(b) Find the bulb’s resistance.
2

A circular parallel-plate capacitor with a spacing of 1.5 mm is charged to produce a uniform electric field with a strength of 3.2 106 N/C. What plate radius is required if the stored charge is -11.9 µC?
1 m

An electronic flash fires a blast of energy from a 804 µF capacitor into a xenon lamp. It recharges through a series resistor of 4.9 k. How long will it take to recharge 63% of its maximum charge?
1 s

A charged 603 µF capacitor is in series with an open switch and a 3.6 k resistor. If the switch is closed, how long will it take for the charge on the capacitor to decay down to 37% of its original value?
1 s

A resistor is placed in series with an uncharged 2.2 µF capacitor, and a 15.0 V battery is put across the two. If the current that immediately flows around the circuit is measured to be 10 µA, determine the resistance. What is the time constant of the circuit?
1 s

Electronic Math Help?

admin — Fri, 26 Mar 2010 09:37:41 +0000

7. What is the total resistance of a circuit that contains two 100 Ω resistors connected in parallel? A. 10 Ω C. 50 Ω
B. 30 Ω D. 150 Ω 8. Which of the following is the correct Ohm’s law formula used to find current?A. l=R-E B.l=E-Rl C.l=E=R D.l=PR 10. If the voltage in a circuit is 24 V and the current is 2 A, what is the total power in the circuit?
A. 6 W C. 72 W
B. 48 W D. 102 W 11. What does the abbreviation VOM stand for?
A. volt-ohm-megohm C. volume-ohm-microamp
B. volt-ohm-milliammeter D. volume-origin-megohm14. What is the total power in a circuit with a current of 4 A and a resistance of 12 Ω?
A. 4 W C. 48 W
B. 16 W D. 192 W

Concept Questions: Current and Resistance?

admin — Thu, 25 Feb 2010 07:28:31 +0000

A fuse is a device designed to break a circuit, usually by melting when the current exceeds a certain value. Fuses are widely used in electronic equipment, but have been replaced by circuit breakers in household wiring. In the "old days" people would sometimes replace a blown fuse with a penny, which happened to be the same size as a fuse. Was this a safe practice? Why

High-voltage power supplies are sometimes designed to have a rather large internal resistance as a safety precaution. Why is such a power supply with a large internal resistance safer than one with the same voltage, but lower internal resistance?

Can all combinations of resistors be reduced to series and parallel combinations?

Old-time Christmas tree lights had the property that, when one bulb burned out, all the lights went out. How are these lights connected, in series or in parallel? How could you rewire them to prevent all the lights from going out when one of them burned out?

Need Help understanding electronic complex circuits. The steps and math.?

admin — Thu, 28 Jan 2010 07:12:40 +0000

Trying to follow seris then parallel and back is confusing. Any help on line(utube type sites) or really good books?

what is the difference of parallel clippers and series clippers?

admin — Tue, 22 Dec 2009 21:39:14 +0000

in electronic circuits

admin — Mon, 16 Nov 2009 19:29:39 +0000

have a paradox in electronic circuits?

admin — Tue, 06 Oct 2009 00:54:11 +0000

imagine a couple of led connected in series …..which drop 2 v across each led when forward biased…….so in total both of them drop 4 v …..now if a 400 ohm resistor is connected in parallel to this arrangment of 2 led ………and the whole is connected in series to a 600 ohm resistor…..now imagine the whole circuit is supplied by 10 v supply such that the leds are forward biased ………….now …if you calculated you will find since there is a drop of 4v across the led the drop accros the parallel 400 ohm must also be 4 v ……..so a current of 10 mA flows through the 400 ohm ……..and since the parallel arrangement drops 4 v we have 6v drop across the 600 ohm ,……so on calculatin the current we again get 10 mA……………does this mean …will the whole of 10 mA current will flow through 400 ohm or not ……..how does it split up in the parallel arrangement ….will the led light or not ………

reference book for basic electronic engineering?

admin — Sat, 05 Sep 2009 03:34:35 +0000

Audio book is a plus, must cover all this topic.
Kirchhoff’s and Ohm’s Laws
Series Circuits
Parallel Circuits
Series and Parallel Combination
Alternating Current
Capacitive Reactance
Inductive Reactance
Resonance
Filters
Diodes
Transistors
Transistor Regulated Power Supply
Transistor Amplifiers
Differential Amplifiers
Operational Amplifiers

Has anyone ever thought, experimentally, about trying to use compound spirals in electronics?

admin — Fri, 24 Jul 2009 01:24:07 +0000

Maybe even with different materials, or semiconductor styles, in different parts, and other compound shapes, and materials for electronic components?
Example: On the surface of circuit board, etch a twin spiral, with two conductors running parallel to each other as they spiral toward the center, with a solder hole at its’ end, or at a location in it, so they could be connected to make parallel induction coils, with or without an inner end connection and with or without a center tap, at the same time (with who knows, what types, or how many possible uses), or left separate to make a capacitor, or used as two parallel inductors, which would probably work and behave like a tank circuit, and could be adjusted by how the lines are spaced, and by how many time each is wound, or maybe even a type of antenna, or set of antennas.

Or make a coiled wire, and then, coil the coiled wire, or wind the coiled, coiled wire again, around a core, or center tap, another wire, or any other arrangement(s) – basically letting the mind keep wondering, and keep testing and calculating…..

Want more?
Have they ever tried standard material and/or other material, induction cores, made with open ends, closed at one, or at both, tapped in different ways, spiraled in different shapes (circular, triangular, etc…), or coated with molded plastic, at different thicknesses, etc, etc….?
Since there will always be new things, these shape ponderings might lead to some wiled stuff!!!

To me, learning from a book is basically memorizing what is already known, but real learning happens when your imagination kicks-in!

Thanks for thinking/pondering with me, and I hope it gets and keeps you wondering too!!!