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The plates of an air capacitor have area A and carry… | StemPy Lab
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The plates of an air capacitor have area A and carry charges +Q and -Q. What is the force of attraction between them?
Physics
Hard
High School (11–12)
Electricity & Magnetism › Electric Potential and Capacitance
NEET
AP
A-Level
IB
Created by
StemPy Lab
The plates of an air capacitor have area
A
A
A
and carry charges
+
Q
+Q
+
Q
and
−
Q
-Q
−
Q
. What is the force of attraction between them?
Q
2
4
ε
0
A
\dfrac{Q^2}{4\varepsilon_0A}
4
ε
0
A
Q
2
Q
2
2
ε
0
A
\dfrac{Q^2}{2\varepsilon_0A}
2
ε
0
A
Q
2
Q
2
2
ε
0
A
2
\dfrac{Q^2}{2\varepsilon_0A^2}
2
ε
0
A
2
Q
2
Q
2
ε
0
A
\dfrac{Q^2}{\varepsilon_0A}
ε
0
A
Q
2
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← Assertion (A): capacitors in series hold the same charge. Reason (R): the plates that are joined together form an isolated conductor with no net charge. Choose the correct option.
Consider these statements. (1) Electric potential is a scalar. (2) Electric field lines cross an equipotential surface at right angles. (3) Capacitors in parallel hold equal charges. (4) Two capacitors in series share the energy equally. How many of them are correct? →
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Electricity & Magnetism › Electric Potential and Capacitance
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