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Byju's Answer
Standard XII
Physics
Introduction
why is the di...
Question
why is the direction of area vector for 3d shapes taken as outward and perpendicular
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Similar questions
Q.
A electron having a charge
e
moves with a velocity
v
in positive
x
−
direction. A magnetic field exists in the region in positive
y
−
direction. The force on the electron acts in:
(perpendicular outward direction is taken as positive
z
−
axis).
Q.
The direction of vector
A
is radially outward from the origin, with
|
A
|
=
K
r
n
where
r
2
=
x
2
+
y
2
+
z
2
and
K
is constant. The value of
n
for which
▽
.
A
=
0
is
Q.
Find the direction cosines of the vector which is perpendicular to the vectors with direction ratios
−
1
,
2
,
2
and
0
,
2
,
1
.
Q.
Rank the magnitudes of
∮
→
B
.
→
d
l
for the closed paths
a
,
b
,
c
and
d
as shown in the figure. A long wire is located at the centre, perpendicular to the plane of the closed paths and carrying a current
1
A
in outward direction.
Q.
Why does the electricity always taken as the opposite direction of the electrons?
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