Question

1 pts Question 1 Select all of the following that are true about magnets and magnetic fields. the source of magnetic fields is net motion of charged particles the South pole of a bar magnet can be separated from the North pole to make two monopoles like magnetic poles IS and S, or N and N) repel and opposites attract IN and S) □ magnetic field lines always form closed loops magnetic fields are scalars a straight wire with current running through it is a source of a magnetic field the Earth's magnetic field can be modeled as a bar magnet current loops have magnetic fields similar to bar magnets

Answer 1

(Tree statements) (i) Net motion of charged particles are source of magnetic field (iii) Like repel and unlike poles attract. (iv) field line are closed loops. (vi) current carrying wires procedures magnetic field (vii) Earth magnetic field modeled as bar magnet (viii) current loops (solenoid) similar to par magnet (i) at point on the + x axis implies down ward (-z) (ii) at point on the -x axis implies upward (+ z) (III) at point on the + z axis implies out of page (+ x) (iv) at point on the -z axis implies Into the page (-x) (True statements) (iii) have respective dipoles, similar filed lines (iv) same method to calculate net field at point (v) magnetic field represents const of lines (true) (ii) force on current loop (iii) magnetic force don�t work (iv) magnetic field don�t speed up or down (v) same direction implies attract opposite direction implies repel