Answer:
Towards the west
Explanation:
Magnetic force is the interaction between a moving charged particle and a magnetic field.
Magnetic force is given as
F = q (V × B)
Where F is the magnetic force
q is the charge
V is the velocity
B is the magnetic field
V×B means the cross product of the velocity and the magnetic field
NOTE:
i×i=j×j×k×k=0
i×j=k. j×i=-k
j×k=i. k×j=-i
k×i=j. i×k=-j
So, if the electron is moving southward, then, it implies that the velocity of it motion is southward, so the electron is in the positive z-direction
Also, the electron is curved upward due to the magnetic field, this implies that the force field is directed up in the positive y direction.
Then,
V = V•k
F = F•j
Then, apply the theorem
F •j = q ( V•k × B•x)
Let x be the unknown
From vector k×i =j.
This shows that x = i
Then, the magnetic field point in the direction of positive x axis, which is towards the west
You can as well use the Fleming right hand rule
The thumb represent force
The index finger represent velocity
The middle finger represent field
Answer:
Thus, the induced current in the coil at is 9.98 A.
Explanation:
Faraday's law says
where is the number of turns and is the magnetic flux through the square coil:
Now,
;
therefore,
is the emf induced in the coil.
Now, the loop is connected to resistance; therefore, at
Thus, the current in the coil at is 9.98 A.
Answer:-50.005 kJ
Explanation:
Given
mass of system =10 kg
work done=0.147 kJ/kg
Change in elevation
initial velocity
Final Velocity
Specific internal Energy
from first Law of thermodynamics
where KE= kinetic energy
PE=potential energy
U=internal Energy
Q=1.47+3.375-4.850-50
Q=-50.005 kJ
Answer:
A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.15 m.
Explanation: