Question

does anyone know that dc current produce magnetic field or not? according to Orested law just alternating current produce magnetic field....

Answer 1

current flow means flowing of moving electrons so moving electrons will always produce a magnetic field

Answer 2

Orested's addresses DC current, not AC.

Answer 3

DC but altering by switching off and on..

Answer 4

Oersted's law applies to any DC current. The only requirement is that the current be steady at the time.

Answer 5

if the current is constant,no magnetic field is produced.a current can produce a magnetic field only if its value is changing,i.e. not constant.
a dc current produces a magnetic field till it reaches its peak value.after reaching to its highest value,the current becomes constant and hence no magnetic field is produced then by the current.

Answer 6

This is not true. A steady current will produce a magnetic field. If you want proof. Setup two parallel wires a run a steady current through both of them for some period of time. They will both exert a magnetic force on each other as the result of the creation of magnetic fields around each wire.

Answer 7

Sometimes people confuse what Faraday's law states--that a changing magnetic field will produce a current in a loop of wire--with the false idea that a changing current is required to produce a magnetic field. That's not the case.

Answer 8

yes.my mistake.u r ryt @PsiSquared . a dc current will produce a magnetic field.I confused it with faraday's law.thanks for the clarification.

Answer 9

You're welcome.

Answer 10

does anyone know why the rainbow is like a circle?

Answer 11

please help and answer my question!