Answer:
B. counterclockwise
Explanation:
We can solve the problem by using the right-hand rule:
- put your thumb finger of the right hand in the same direction of the current in the wire (upward)
- wrap the other fingers around the thumb
- the direction of the other fingers will give the direction of the magnetic field lines
By doing these steps, we see that the other fingers form concentric circles in a counterclockwise direction (seen from above), so this is the direction of the magnetic field lines.
Most objects move at a constant speed because of friction and acceleration. The constant speed keeps them in place, and keeps a balance.
High frequency , it is because wavelength is inversely proportional to frequency
To Make I the subject you need to get it by itself. To do this divide both sides by V and t:
I = E/Vt
