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Circuits
Overachieving and under-appreciated, circuits are the foundation that our technological society is built on. Now's your chance to find out not only how they work, but why. Questions regarding the physics behind voltage, resistance, capacitance, inductance, transistors, LEDs, switches, and power supplies; and how they're used to create analog and digital circuits, should be directed here.
1,646 Questions
What does the term cycle refer to in AC circuits?
The current or voltage have a frequency in an AC system. It is 50 or 60 hertz per second. It is also known as 50 or 60 cycles per second. Each cycle is set of positive and negative amplitude. Refer Sinusoidal wave for further details.
Where is the o2 sensor heater circuit bank 1 sesnsor 1 located on a 2000 dodge durango?
Both forward O2 sensors need to be replaced at the same time anyway, just replace both forward sensors and don't worry about which is which. You don't replace just the sparkplug that's misfiring, do you? Well, maybe you do, but it's the kind of thing that leaves you constantly working on your car. If one's gone bad the other is close behind.
Explain why most homes have parallel circuits rather than series circuits?
For any electrical appliance (lamps, washing machines, etc.) to operate at their rated power, they must be subject to their rated voltage. This is why both values are shown on their 'nameplates' -e.g. for a lamp: '60 W / 230 V', etc.
As each branch of a parallel circuit is subject to the same (supply) voltage, by connecting all the appliances in a home in parallel with the supply, each appliance will also be subject to their rated voltage. This is the primary reason for connecting appliances in parallel.
A secondary reason is that, if appliances were to be connected in series, and one appliance stops working, then it will disconnect all the other appliances in the home!
How many circuit breakers would a lightning strike trip?
Generally circuit breaker is not designed to trip off in the event of lightning. The system has lightning arrestors which reroute the lightning effect to earth instantly. If there are no lightning arrestors then the equipment are likely to fail upon a lightning strike.
A measurement of opposition to electric current flow in a component or circuit.
What happens to the light bulb when extra dry cells are added to the series circuit?
When extra dry cells are added to a series circuit containing a light bulb, the total voltage supplied to the circuit increases. This higher voltage can lead to an increase in the current flowing through the circuit, which may cause the light bulb to shine brighter. However, if the voltage exceeds the bulb's rated capacity, it could overheat and potentially burn out or become damaged. Therefore, caution should be taken when adding extra cells to avoid damaging the bulb.
What is a ground-joint union for gas lines?
Ground joint unions are used to make new connections to threaded gas piping systems (tapping into an existing gas line).
What precautions as to phenobarbital use should be observed?
Dosages should not be exceeded. It is also important to adhere to the proper timetable for use of the medication. Use of the drug should not be discontinued without consulting a physician
What are the advantages and disadvantages of using electric energy?
Renewable, or green, energy has several advantages including but not limited to the fact that it is renewable as well as the lack of harmful emissions. However, renewable energy require expensive facilities and the energy they produce is rather inconsistent. Some renewable energy types also need to be built on specific areas.
-- The resistance of the wire is proportional to its length.
-- When the length is reduced by 1/2 , the resistance is also reduced by 1/2 .
-- Reducing the resistance across the battery by 1/2 causes the current to double.
-- The new current is 100 mA.
(Assumes zero internal resistance in the battery, and that the 4.5 volts doesn't 'sag'.)
What is the current produced with a 9-volt battery through a resistance of 100 ohms?
Current I = V/R
V = 9V
R = 100ohm
I = 9V/100ohm = 90mA
FET stands for Filed Effect Transistor. Bipolar transistors have junctions to control current but a FET does it by controlling the conductivity of a single channel by altering the electric Field of that channel.
If headlight uses 150 w and the car battery produces 12 v what is the current in the circuit?
As w = v * a
current = 150 * v * a / (12 * v) = 150/12 * v * a / v = 150/12 * a = 12.5 * a = 12.5a
What is advantage of CMOS setup?
CMOS is a type of technology for constructing integrated circuits. One advantage of this setup is less waste heat compared to NMOS logic or transistor-transistor logic.
'Voltage' and 'electric potential difference' are the same thing.
None of the others is like anything else, and they don't belong.
What is the function of wheat stone bridge?
this is a balancing apparatus
in which one has to determine the resistive parameter
of a particular circuit with the help of an apparatus which has
pre determined resistors already in place
and one of them is a variable one
which can be varied to determine the balanced current
in a circuit.consisting of four arms.
without a drg of the same i wont be able to explain.
but chek it out
