Two wires with parallel current In the picture below, the two wires carry curren
ID: 3281059 • Letter: T
Question
Two wires with parallel current In the picture below, the two wires carry current i1 and i2, respectively, with positive current to the right. The charge q is positive and has velocity v to the right. If i2 il then the force on q equals zero. If i2 0 and i1 is greater than zero, then the force on q points into the page. If v 0, then the force on q is zero. If i2 0 and i1 is greater than zero, then the magnetic field near charge q points out of the page If i2-0 and i is greater than zero, then the force on q is north. B If i1 i2, then the wires are attracted to each other If l is greater than i2, then the force on q is north. Submit Answer Tries o/15Explanation / Answer
This rule will be explicitly used :
Hold the wire in right hand such that thumb points towards direction of current, the curled fingers wil give direction of magnetic field produced by the wire.
a. Yes force will be zero as magnitude of Magnetic field will be same(as currents are same) but direction will be opposite so, no effect. (Use above rule for direction)
b.
Rule 2: project fingers of right hand mutually prependicular,
Such that thumb gives velocity of POSITIVE charge, forefinger gives magnetic field then middle finger gives velocity of positive charge.
No, force will be upwards along the page.
c. Yes force will be zero as Lorentz force is F=q(v×B) ×-cross product
d. No magnetic field is into the page. (Rule 1)
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