A changing magnetic field induces voltage in a nearby wire.Īmpère’s Law states that a current (i) in a wire induces a magnetic field (B) around the wire.A constant magnetic field induces voltage in a nearby stationary wire.A changing current in a wire induces a changing magnetic field around the wire.A constant current in a wire induces a constant magnetic field around the wire.Concerning the relationship between electricity and magnetism, which of the following statements is false?.In this case both the conductor and magnetic field are static, so dB/dt = 0 an the induced voltage is zero. This is an example of the Faraday-Lenz Law, where the induced voltage is directly proportional to the rate of change of the magnetic field ( dB/dt). Depends on the strength of the magnetic field.Depends on the angle of the conductor with the magnetic field.The voltage induced across a stationary conductor in an external static magnetic field.The direction of magnetic field lines surrounding a wire can be determined usingįleming developed the right hand rule in which if you grasp a wire carrying current with the right hand and point your thumb in the direction of the current, your fingers will curl around the wire in the direction of the induced magnetic field.If the current doubles, the magnitude of B also doubles. If the current in a wire doubles, the induced magnetic fieldĪmpère’s Law states that a current ( i) in a wire induces a magnetic field ( B) around the wire proportional to that current.Protons, neutrons, and whole nuclei possess spin but the size of the magnetic effect is relatively small and limited to juxta-nuclear region of the atom only. The combination of intrinsic electron spin and electron orbital angular momentum is primarily responsible for the bulk magnetic properties of matter. The bulk magnetic properties of matter derive primarily from.The magnitude of the field depends on the magnitude of the current, so b) and c) are false. if the direction of current flow reverses, the direction of the field does also, so d) is correct. When the current flowing through a wire reverses direction, the magnetic field around the wireĪmpère’s Law states that a current ( i) in a wire induces a magnetic field ( B) around the wire.