Page 1 of 2 • 1, 2
Calculating The Current
on Tue Aug 28, 2018 12:48 pm
The Current
Current is the flow of Electric Current
In Ohm's Law current is represented by the letter "I" and measured in Amperes or "Amps".
The current through a conductor is directly proportional to the voltage and inversely proportional to the resistance.
Mathematical Equation Formula:
I=V/R
Where; I= Current
V= Voltage
R= Resistance
We can think of the water tank as a good example of flowing current, where the amount of flowing water on the tank as the current. the higher the pressure the higher the flow and vice versa or the higher the voltage the higher the current for a constant resistance.
Examples in Calculating the Current
1. Calculate the amount of I for 12 000 V across 6,000,000Ω.
Given
V= 12000
R= 6000000Ω
I= ?
Solution
I= V/R
I= 12000V/6000000Ω
I= 0.002A or 2mA
2. How much current flows in an electric fan having a resistance of 35Ω when connected across a 250 V line?
Given
V= 250 V
R= 35Ω
I= ?
Solution
I=V/R
I= 250V/35Ω
I= 7.14 A
3.
Given
V= 110 V
R= 2200 Ω
I= ?
Solution
I=V/R
I=110/2200 Ω
I= 0.05 A
Current is the flow of Electric Current
In Ohm's Law current is represented by the letter "I" and measured in Amperes or "Amps".
The current through a conductor is directly proportional to the voltage and inversely proportional to the resistance.
Mathematical Equation Formula:
I=V/R
Where; I= Current
V= Voltage
R= Resistance
We can think of the water tank as a good example of flowing current, where the amount of flowing water on the tank as the current. the higher the pressure the higher the flow and vice versa or the higher the voltage the higher the current for a constant resistance.
Examples in Calculating the Current
1. Calculate the amount of I for 12 000 V across 6,000,000Ω.
Given
V= 12000
R= 6000000Ω
I= ?
Solution
I= V/R
I= 12000V/6000000Ω
I= 0.002A or 2mA
2. How much current flows in an electric fan having a resistance of 35Ω when connected across a 250 V line?
Given
V= 250 V
R= 35Ω
I= ?
Solution
I=V/R
I= 250V/35Ω
I= 7.14 A
3.
Given
V= 110 V
R= 2200 Ω
I= ?
Solution
I=V/R
I=110/2200 Ω
I= 0.05 A
Re: Calculating The Current
on Tue Sep 04, 2018 12:34 pm
automatic ba na pagmay volatage dadaloy na ang current?
Re: Calculating The Current
on Wed Sep 05, 2018 1:18 pm
The word current is a Latin word currere, meaning “to run,” and its form cursus give us the roots curr and curs. Words from the Latin currere have something to do with running. A current is the direction in which a river runs or flows.
Re: Calculating The Current
on Wed Sep 05, 2018 2:31 pm
nyella wrote:automatic ba na pagmay volatage dadaloy na ang current?
Yes, the current automatically flows on a conductor whenever voltage is present.
Re: Calculating The Current
on Fri Sep 07, 2018 7:53 am
kc wrote:Does current has different types?
There are two different types of current in widespread use today. They are direct current, abbreviated DC, and alternating current, abbreviated AC. In a direct current, the electrons flow in one direction.
Re: Calculating The Current
on Fri Sep 07, 2018 8:10 am
Do electrons move rapidly through directcurrent circuits?
Re: Calculating The Current
on Fri Sep 07, 2018 8:14 am
Adminnnn! How do electrons in alternating current circuits carry energy?
Re: Calculating The Current
on Fri Sep 07, 2018 8:20 am
Current is through each resistor is different because resistance of each resistor is different (suppose). but how is the voltage drop at each resistor same here? shouldn't the voltage drop at each resistor be different because each resistor offers different resistor?
Re: Calculating The Current
on Fri Sep 07, 2018 8:27 am
How is the current is same at all places in series circuit when there are resistors?
Re: Calculating The Current
on Fri Sep 07, 2018 8:28 am
White wrote:Do electrons move rapidly through directcurrent circuits?
Electrons actually move very slowly through direct current (DC) electric circuits.
Re: Calculating The Current
on Fri Sep 07, 2018 8:29 am
kc wrote:Does current has different types?
There are two types of electric current: direct current (DC) and alternating current (AC).
Re: Calculating The Current
on Fri Sep 07, 2018 9:43 am
White wrote:Adminnnn! How do electrons in alternating current circuits carry energy?
The electrons is pushed in single direction.
Re: Calculating The Current
on Tue Sep 11, 2018 8:27 am
The given circuit example is a simple circuit. I don't see any problem with the voltage drops here since the circuits are not connected and given as different circuits.White wrote:Current is through each resistor is different because resistance of each resistor is different (suppose). but how is the voltage drop at each resistor same here? shouldn't the voltage drop at each resistor be different because each resistor offers different resistor?
Re: Calculating The Current
on Tue Sep 11, 2018 8:30 am
DRAVEN wrote:White wrote:Do electrons move rapidly through directcurrent circuits?
Electrons actually move very slowly through direct current (DC) electric circuits.
Why do electrons move very slowly through circuits with direct current?
Re: Calculating The Current
on Tue Sep 11, 2018 8:34 am
White wrote:How is the current is same at all places in series circuit when there are resistors?
As you can see, the circuit have only one resistor so we are looking for only one value of current.
Re: Calculating The Current
on Sat Sep 15, 2018 1:19 am
This Forum is very helpful specially for those who under taking electronic.
Re: Calculating The Current
on Sat Sep 15, 2018 1:21 am
Pinkeroo wrote:White wrote:How is the current is same at all places in series circuit when there are resistors?
As you can see, the circuit have only one resistor so we are looking for only one value of current.
The current is all the same in a series circuit because as you can see the circuit the resistor is align so expect that the same current is flowing in the every resistor in a circuit
Re: Calculating The Current
on Sat Sep 15, 2018 1:24 am
Is there any method or formulas that we can use to calculate current?
Re: Calculating The Current
on Sat Sep 15, 2018 1:26 am
Is there any LETTER that can represent the current? except dun sa LETTER I
Re: Calculating The Current
on Tue Sep 25, 2018 1:34 pm
I think wala na except jan sa Letter na yan.Mau wrote:Is there any LETTER that can represent the current? except dun sa LETTER I
Re: Calculating The Current
on Wed Sep 26, 2018 10:32 pm
Mau wrote:Is there any method or formulas that we can use to calculate current?
You can try yung Kirchhoffs Law
Re: Calculating The Current
on Mon Oct 15, 2018 9:37 am
mariee wrote:How can we compute for the Amperage?
The formula for Volts is Watts divided by Amps. To use the chart, cover up the V with your finger and use the remaining chart calculation of W divided by A. Using our sample panel data, 60 watts divided 5 Amps equals 12 Volts. The formula for Amps is Watts divided by Volts.
Page 1 of 2 • 1, 2
Permissions in this forum:
You cannot reply to topics in this forum

