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Electric Charges And Fields

Question

Two charged particles having charge 2.0 x 10^-8 C each are joined by an insulating string of length 1 m and the system is kept on a smooth horizontal table. Find the tension in the string.

Solution

Here given the particles have an equal charge joined by a string of length 1 m.

$q_{1} = q_{2} = 2 \times 10^{- 8} C r = 1 m$

Tension in the string is the force of repulsion (F) between the two charges.

According to Coulomb's law,
$F = \frac{q_{1} q_{2}}{4 π \in_{0} r^{2}} = \frac{9 \times 10^{9} (2 \times 10^{- 8}) (2 \times 10^{- 8})}{1^{2}}$

$F = 3.6 \times 10^{- 6} N$

Some More Questions From Electric Charges and Fields Chapter

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

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Electric Charges And Fields

Two charged particles having charge 2.0 x 10^-8 C each are joined by an insulating string of length 1 m and the system is kept on a smooth horizontal table. Find the tension in the string.

Some More Questions From Electric Charges and Fields Chapter

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

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NCERT Sample Papers

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For Daily Free Study Material Join wiredfaculty

Electric Charges And Fields

Two charged particles having charge 2.0 x 10-8 C each are joined by an insulating string of length 1 m and the system is kept on a smooth horizontal table. Find the tension in the string.

Some More Questions From Electric Charges and Fields Chapter

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Two charged particles having charge 2.0 x 10^-8 C each are joined by an insulating string of length 1 m and the system is kept on a smooth horizontal table. Find the tension in the string.