As we know that magnitude of the vector is 670 m
and it is inclined 25 degree with x axis
now we know that component of vector along x direction is given as



Part 2)
In order to find the other component of the vector we can use



Answer:
Explanation:
a )
The Gaussian surface must have contained both the charges like +3 nC and - 3 nC , total charges being zero . According the Gauss's law , total electric flux over a closed surface is equal to 1 / ε₀ times the total charge contained inside the closed surface .
Since total charge inside is zero , total flux will be 1 / ε₀ x 0 = 0
b )
In this case the Gaussian surface is so small that it contains only the charge
+ 3 nC .
So electric flux over the Gaussian surface
= ( 1 / ε₀ ) x 3 x 10⁻⁹
= (1 / 8.85 x 10⁻¹² ) x 3 x 10⁻⁹
= 3 x 10³ / 8.85
= 339 weber.
=
Answer:
a) 43.20V
b) 2.71W/s
c) 40.25s
d) 7.77Nm
Explanation:
(a) The emf of a rotating coil with N turns is given by:

N: turns
B: magnitude of the magnetic field
A: area
w: angular velocity
the emf max is given by:

(b) the maximum rate of change of the magnetic flux is given by:

(c) 
(d) The torque is given by:
