Can you have current without voltage

How to Use Ohms Law to Determine Current. The current is dependent on voltage.

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These are all things we can see without any math or anything too tough.

Can you have current without voltage. Now you cant have currents without voltages because if theres a current theres a charge moving and every charge produces a voltage but you can have currents without voltage differences in space. Nothere is no current without voltage because according to ohms law VIR where v is voltage I is current and R is resistancewhen V0 then I0 and R0 so not possible without current. Ohms Law confusion can there be voltage without current.

The wall outlet has voltage all the time but current only flows if the circuit is closed with something that has a resistance. Can voltage exist without current. The current is dependent on voltage.

Voltage on the other hand does not depend on the current. The voltage is the difference between points. It is the force that allows electrons to move from one point to another.

The ohms law you quoted is not applicable for ZERO volts. When you DO have current flow then SOMEWHERE there is a voltage that is not ZERO. So the first answer is.

Yes there can be voltage without current. Current without voltage Current is the flow of charged particles. Particles are suscpetible to a.

It is possible to have voltage without current but current cannot flow without voltage. The answer is yesvoltage remains the same as current moves through the circuitAs the voltage remains. Transformers do NOT necessarily output low voltage high current or low current high voltage but because they are limited in the power they can output and because of the characteristics of the winding this is often the case.

You are confusing POTENTIAL current for a given voltage with actual current produced by a transformer. Voltage is the Cause Current is the Effect. Voltage attempts to make a current flow and current will flow if the circuit is complete.

Voltage is sometimes described as the push or force of the electricity it isnt really a force but this may help you to imagine what is happening. It is possible to have voltage without current but current cannot flow without voltage. Individuals have been electrocuted by appliances using ordinary house currents of 110 volts and by electrical apparatus in industry using as little as 42 volts direct current.

The real measure of shocks intensity lies in the amount of current amperes forced though the body and not the voltage. You say you are connecting motor to a circuit it means you are connecting load to circuit. If the load is present you must have current.

And all the motor are rated in power Power current Voltage if the current is zero your power is zero you cant run the motor. And also in your picture you are connecting your solenoids in series. In series connections the current is same so all your solenoids will have the same current.

2 Electrical Potential or Voltage Formula in DC Circuits. V I x R. V P I.

V P x R 3 Electrical Current Formulas in DC Circuit. I PR 4 Electrical Resistance Formulas. R PI 2.

R V 2 P Where. I Current in Amperes A V Voltage in Volts V P Power in Watts W R Resistance in Ohm Ω. If you are comfortable with algebra all you need to do is commit EIR to memory and derive the other two formulae from that when you need them.

Voltage is measured in volts symbolized by the letters E or V. Current is measured in amps symbolized by the letter I. Nov 19 2008.

In a circuit with a purely resistive load. I E R or Current Voltage Resistance Ohms Law In order to change the voltage without changing the current you must change the resistance a porportional amount. If the load resistance varies you can use a constant current source to maintain the current level as hgmjr implied.

In both series and parallel circuits the total voltage is equal to the sum of the individual voltages. Once you have worked out the total resistance and voltage use Ohms Law to calculate the total current in the circuit. In Ohms Law the total current is equal to the total voltage.

Therefore R 220 350020 10825 Ω or 10 K however practically you will find that any value above 100 Ohms works adequately well due to the low current involved with the circuit. If you are using more LEDs in series the forward voltage just needs to be modified accordingly the remaining parameters can be kept as it is. Theres a saying that its not the volts that kills you its the amps and while thats true in a way you cant have amps without volts and skin resistanc.

These are all things we can see without any math or anything too tough. Step 2 We see that the voltage source is attached to what is already defined as reference ground at the bottom of the schematic. Step 3 Weve already established that I 1 I 2 I 3 but lets define those currents via their.

With A-B B-C and A-C you are looking a loads in a delta connected system. 208120 is the voltage for a delta 208 star 120 connected system. You would have 208 volts across each of the loads you gave and can find the current using Ohms law ie.

A-B 56000208 269 A in that branch. Learn the Power Formula. Weve seen the formula for determining the power in an electric circuit.

By multiplying the voltage in volts by the current in amps we arrive at an answer in watts Lets apply this to a circuit example. How to Use Ohms Law to Determine Current. In the above circuit we know we have a battery voltage of 18 volts and a lamp resistance of 3 Ω.

Remember that with our definition that the current is flowing clockwise the voltage is dropping as we go from ground across R 3 and still dropping as we go across R 2 before coming to the voltage source which since weve defined this clockwise direction gives us a negative 5 volts. This is where its incredibly important to understand whats going on intuitively - if you get bogged down into the math too much without knowing whats going on you.