The starting point for measuring motion is called : The Reference Point.
Explanation:
It is given that,
The separation between two parallel wires, r = 5.6 cm = 0.056 m
Current in both the wires is 2.65 A
(a) We need to find the magnitude of the force per unit length between the wires. It can be given by :

(b) As the current is in same direction, the wires will attract each other.
I would say the same thing as the first answer
Answer:
(a)
(B) 
Explanation:
We have given the the speed of the electron =10^6 m/sec
The time period of the electron is given by
where r is the Bohr radius, which is equal to 
So time period 
(A) We know that current 
(B) Magnetic moment is given by
, where I is current and A is area
So 