Grad Undergrad Faculty Other I have done this pretest tutorial before PRETEST MAGNETIC INTERACTIONS 1 A positively charged particle is located in a region of uniform magnetic field Determine the direction of the magnetic force on the particle if it is moving as described in each of the two diagrams below If the magnetic force on the particle has zero magnitude indicate that explicitly Explain A A v B B Positively charged particle at rest at A in a uniform magnetic field Positively charged particle moving to the right at A in a uniform magnetic field 2 The diagrams below show a long straight wire through which there is a current I Both a side view and a top view of the wire are shown The top view diagram uses the convention that indicates current out of the page Current into the page would be indicated by A positively charged particle moves to the right at point A as shown Label the direction of the magnetic force on the particle in each of the two diagrams If the magnetic force on the particle has zero magnitude indicate that explicitly Explain Tutorials in Introductory Physics EM UCO1120044T PA MGI V2b side view top view A A I v v Positively charged particle at A is moving to the right Positively charged particle at A is moving to the right I McDermott Shaffer P E G U Wash Autumn 2004 3 A second wire carrying current in the same direction as the first is added to the right of the first wire and point A The top view diagram below shows this configuration of wires As in the previous question a positively charged particle moves to the right at point A a Determine the direction of the magnetic force on the top view particle Explain A v I I b When the second wire is added does the magnitude of the magnetic force on the particle increase decrease or remain the same Explain Positively charged particle at A is moving to the right 4 Now consider a positively charged particle located at point C near the same two wires as shown below The particle moves to the right at point C top view a Determine the direction of the magnetic force on the particle Explain C I b b When the second wire is added does the magnitude of the I Positively charged particle at C is moving to the right magnetic force on the particle increase decrease or remain the same Explain Tutorials in Introductory Physics EM UCO1120044T PA MGI V2b McDermott Shaffer P E G U Wash Autumn 2004 v
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