True/False Questions If i 2 = - i 1 then the force on q equals zero. If i 1 = 0

Question

True/False Questions
If i2 = - i1 then the force on q equals zero.
If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page.
If i1 = i2, then the wires are attracted to each other.
If i2 = 0 and i1 is greater than zero, then the force on q is north.
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 i1 is greater than i2, then the force on q is north.

Explanation / Answer

a. False ( if i2 = -i1 , we have the net magnetic field into the page which gives a non zero force on q ) b. False ( Use right hand palm rule, we get the magnetic field to be pointing out of the page) c. True ( Using Fleming's left hand rule , clearly , the two wire s attract each other) d. True ( use fleming's left hand rule, the net force is pointing northwards) e. False ( it points northwards) f. True ( F= qvB , if v= 0 , then force =0) g. True ( net magnetic field is into the page and hence by fleming's left hand rule, the force is northwards on q) NOTE : PLEASE DO READ ON FLEMING'S LEFT HAND RULE AND RIGHT HAND PALM RULE FROM GOOGLE. IT WILL BE VERY USEFUL TO YOU. ITS ALSO VERY SIMPLE . Cheers !!! g.

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