Induction - in two parallel wires - affecting voltage?

In summary, two parallel wires, wire 1 and wire 2, are being examined in relation to their currents and voltage drops. The current in wire 2 does not depend on the constant current in wire 1, and the voltage drop over wire 2 does not change based on the current in wire 1. However, the current in wire 2 may be affected by changes in the current of wire 1 over time. Additionally, if wire 2 is driven by a constant current source, it may be completely independent of the current in wire 1. Finally, without an alternating current, there is no changing magnetic field and hence no induction.
  • #1
Hyo X
101
11
Hypothetical, Two parallel wires, wire 1 and wire 2. Trying to understand my system.
A) Wire 1 has a constant current which is being driven by a V and power supply.
Is there a current in wire 2 if the current in Wire 1 is constant?

B) Wires A and B both have current flowing through them. Does the magnitude of the current in 2 depend on the current in 1?

C)Does the voltage drop over wire 2 change depending on the steady state magnitude of current in wire 1?
 
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  • #2
Hyo X said:
Is there a current in wire 2 if the current in Wire 1 is constant?

No. Without an alternating current there is no changing magnetic field and hence no induction.

Hyo X said:
B) Wires A and B both have current flowing through them. Does the magnitude of the current in 2 depend on the current in 1?

It does not.

Hyo X said:
C)Does the voltage drop over wire 2 change depending on the steady state magnitude of current in wire 1?

Nope.
 
  • #3
Hyo X said:
Hypothetical, Two parallel wires, wire 1 and wire 2. Trying to understand my system.

First, understand that the dependence of the current in wire 2 could be dependent upon only changes in the current of the wire 1 with a few odd exceptions. The current in wire 2 could be completely independent of that in wire 1 if wire 2 is driven by a constant current source.

In general, this is not a simple question, if say, the resistance of wire 2 is dependent upon an applied magnetic field due to wire 1. I will treat it as a simple.

To answer, I'll assume that wire 2 is a closed loop without a driving voltage or current source unless implied otherwise.

A) Wire 1 has a constant current which is being driven by a V and power supply.
Is there a current in wire 2 if the current in Wire 1 is constant?

no, the constant current wire 1 generates no changing magnetic field to effect the electric current in wire 2.

B) Wires A and B both have current flowing through them. Does the magnitude of the current in 2 depend on the current in 1?

no. the current flowing in wire 2 does not depend on the current in wire 1, but how much the current in wire 1 changes over time. The current in wire 2 certainly depends on how much the current in wire 1 changes.

C) Does the voltage drop over wire 2 change depending on the steady state magnitude of current in wire 1?

nope, and it seems Drakkith and I agree on all points.
 
Last edited:

FAQ: Induction - in two parallel wires - affecting voltage?

What is induction?

Induction is the process by which a changing magnetic field can create an electric current in a conductor.

How does induction occur in two parallel wires?

When a changing current flows through one wire, it creates a changing magnetic field around it. This changing magnetic field will induce a current in the second parallel wire, as the magnetic field lines intersect with the wire.

How does induction affect voltage in parallel wires?

The induced current in the second wire will create a voltage difference between the two wires, as the electrons in the wire are pushed and pulled by the changing magnetic field.

What is the relationship between the strength of the magnetic field and the induced voltage?

The induced voltage is directly proportional to the strength of the changing magnetic field. A stronger magnetic field will induce a higher voltage in the parallel wire.

How does the distance between the two parallel wires affect induction and voltage?

The closer the two wires are, the stronger the magnetic field will be, resulting in a higher induced voltage. Conversely, a greater distance between the wires will result in a weaker magnetic field and a lower induced voltage.

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