A ring has charge \( Q \) and radius \( R \). If a charge \( q \) is placed at its centre then t... VIDEO
A ring has charge \( Q \) and radius \( R \). If a charge \( q \) is placed at its centre then the increase in tension in the ring is
\( \mathrm{P} \)
(A) \( \frac{Q q}{4 \pi \varepsilon_{0} R^{2}} \)
(B) zero
W
(C) \( \frac{Q q}{4 \pi^{2} \varepsilon_{0} R^{2}} \)
(D) \( \frac{Q q}{8 \pi^{2} \varepsilon_{0} R^{2}} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions 2023-01-16 If a variable takes values \( 0,1,2, \ldots \ldots, n \) with frequencies \( q^{n},(n) q^{n-1} p... 2023-01-16 The weighted mean of first \( n \) natural numbers whose weights are equal is given by
(A) \( (2... 2023-01-16 The algebraic sum of deviations of a set of values from the arithmetic mean is:
(A) 0
(B) 1
(C) ... 2023-01-16 For a set of 100 observations, taking assumed mean as 4 , the sum of the deviations is \( -11 \m... 2023-01-16 Consider a classroom that is roughly \( 5 \mathrm{~m} \times 10 \mathrm{~m} \times 3 \mathrm{~m}... 2023-01-16 In a constant volume calorimeter, \( 3.5 \mathrm{~g} \) of a gas with molecular weight 28 was bu... 2023-01-16 Identify the incorrect statement.
\( \mathrm{P} \)
(i) Bacillus thuringiensis are available in s... 2023-01-16 In the circuit shown in figure potential difference between \( A \) and \( B \)
\( \mathrm{P} \)... 2023-01-16 The capacitance of an filled parallel plate capacitor is \( 20 \mu \mu \mathrm{F} \). The
\( \ma... 2023-01-16 Define isotherms. \( \mathrm{P} \) W 2023-01-16 A ring has charge \( Q \) and radius \( R \). If a charge \( q \) is placed at its centre then t... 2023-01-16 The equivalent capacitance between \( A \) and \( B \) is (each of the capacitors obtained is of... 2023-01-16 Figure shows two conducting thin concentric shells of radii \( r \) and \( 3 r \). The outer she... 2023-01-16 A spherical condenser has \( 10 \mathrm{~cm} \) and \( 12 \mathrm{~cm} \) as the radii of inner ... 2023-01-16 \( \mathrm{MeV} \) is
(A) \( 1.6 \times 10^{-19} \mathrm{~J} \)
(B) \( 1.6 \times 10^{-22} \math... 2023-01-16 A soap bubble has radius \( R \), charge q, surface tension T. Find the excess pressure in it.
\... 2023-01-16 A charge \( Q \) is uniformly distributed over a large plastic plate. The electric field at poin... 2023-01-16 A parallel-plate air capacitor has a plate area of \( 100 \mathrm{~cm}^{3} \) and separation
\( ... 2023-01-16 An electric dipole, made up of a positive and a negative charge, each of \( 1 \mu \mathrm{C} \) ... 2023-01-16 Identify the complexes which are expected to be coloured. Explain
\[
\left[\mathrm{Cu}\left(\mat... 2023-01-16 A circular wire of radius \( R \) carries a total charge \( Q \) distributed uniformly over its ...