Inertia. (Newton's Laws of Motion)
Answer:
Choice a. Approximately 
on average.
Explanation:
The electric current through a wire is the rate at which electric charge flows through a cross-section of this wire.
Assume that electric charge of size 
flowed through a wire cross-section over a period of time 
. The average current in that wire would be:
.
For this question:
, whereas
.
Therefore, the average current in this circuit would be:
.
However, the units in the choices are all in 
(for Amperes.) One Ampere is equal to one 
. It will take some unit conversations to change the unit of 
(coulombs-per-minute) to coulombs-per-second.
.
Hence, the most accurate choice here would be choice a.
Answer:
Explanation:
When a charged particle is moving in a straight line, means undeflected in a crossed magnetic and electric field, it means the net force on the charged particle is zero.
magnetic force is balanced by the electric force
q v B = q E
Where, q be the charge on the particle, v be the velocity, B be the strength of magnetic field, e be the strength of electric field.
So, B = E / v
A and B i think is the answer
