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JEE Main Physics Class 12 Electrostatic Potential and Capacitance Part 2 Questions
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© examsnet.com
Question : 31
Total: 100
Three point charges of magnitude
5
µ
C
,
0.16
µ
C
and
0.3
µ
C
are located at the vertices
A
,
B
,
C
of a right angled triangle whose sides are
A
B
=
3
cm
,
B
C
=
3
√
2
cm
and
C
A
=
3
cm
and point
A
is the right angle corner. Charge at point
A
experiences _________
N
of electrostatic force due to the other two charges.
[26-Jul-2022-Shift-2]
Your Answer:
Validate
Solution:
F
1
=
k
×
5
×
0.3
×
10
−
12
9
×
10
−
4
=
9
×
10
9
×
5
×
0.3
×
10
−
12
9
×
10
−
4
=
1.5
×
10
=
15
N
F
2
=
9
×
10
9
×
5
×
0.16
×
10
−
12
9
×
10
−
4
=
8
N
force experienced by charge at
A
=
√
F
1
2
+
F
2
2
=
√
15
2
+
8
2
=
√
289
=
17
N
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