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Byju's Answer
Standard XI
Physics
Understanding Electrostatic Potential Energy
The displacem...
Question
The displacement of a charge Q in the electric field
E
=
e
1
^
i
+
e
2
^
j
+
e
3
^
k
is
^
r
=
a
^
i
+
b
^
j
.
The work done is
A
Q
(
a
e
1
+
b
e
2
)
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B
Q
√
(
a
e
1
)
2
+
(
b
e
2
)
2
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C
Q
(
e
1
+
e
2
)
√
a
2
+
b
2
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D
Q
(
√
e
2
1
+
e
2
2
)
(
a
+
b
)
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Solution
The correct option is
A
Q
(
a
e
1
+
b
e
2
)
By using
W
=
Q
(
⇀
E
.
Δ
⇀
r
)
⇒
W
=
Q
[
(
e
1
^
i
+
e
2
^
j
+
e
3
^
k
)
.
(
a
^
i
+
b
^
j
)
]
=
Q
(
e
1
a
+
e
2
b
)
Suggest Corrections
0
Similar questions
Q.
The displacement of a charge Q in the electric field
E
=
e
1
^
i
+
e
2
^
j
+
e
3
^
k
is
^
r
=
a
^
i
+
b
^
j
.
The work done is
Q.
The displacement of a charge Q in the electric field
E
=
e
1
^
i
+
e
2
^
j
+
e
3
^
k
is
^
r
=
a
^
i
+
b
^
j
.
The work done is
Q.
The displacement of charge
q
in the electric field
→
E
=
e
1
^
i
+
e
2
^
j
+
e
3
^
j
is
→
r
=
a
^
i
+
b
^
j
. The work done is
Q.
Charge
Q
is given a displacement
→
r
=
a
^
i
+
b
^
j
in an electric field
→
E
=
E
1
^
i
+
E
2
^
j
. The work done is :
Q.
A charge
q
is projected into a uniform electric field
E
, work done when it suffers a displacement
Y
along the field direction is
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