AP EAPCET 2024 - 23th May Morning Shift | Electrostatics Question 3 | Physics

Two particles of charges 4 nC and $Q$ are kept in air with a separation of 10 cm between them. If the electrostatic potential energy of the system is $1.8 \mu \mathrm{~J}$, then $Q=$

12 nC

9 nC

5 nc

7 nC

AP EAPCET 2024 - 22th May Evening Shift

MCQ (Single Correct Answer)

-0

The magnitude of an electric field which can just suspend a deuteron of mass $3.2 \times 10^{-27} \mathrm{~kg}$ freely in ari is

$19.6 \times 10^{-8} \mathrm{NC}^{-1}$

$196 \mathrm{NC}^{-1}$

$1.96 \times 10^{-10} \mathrm{NC}^{-1}$

$0.196 \mathrm{NC}^{-1}$

AP EAPCET 2024 - 22th May Evening Shift

MCQ (Single Correct Answer)

-0

Two charges 5 nC and -2 nC are placed at points $( 5 cm\mathrm{~}$ $0,0)$ and $(23 \mathrm{~cm}, 0,0)$ in a region of space where there is no other external field. The electrostatic potential energy of this charge system is

$10 \times 10^{-7} \mathrm{~J}$

$5 \times 10^{-7} \mathrm{~J}$

$15 \times 10^{-7} \mathrm{~J}$

$25 \times 10^{-7} \mathrm{~J}$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

A neutral ammonia $\mathrm{NH}_3$ in its vapour state has electric dipole moment of magnitude $5 \times 10^{-30} \mathrm{C}-\mathrm{m}$. How far apart are the molecules centres of positive and negative charge?

$4.125 \times 10^{-12} \mathrm{~m}$

$3.125 \times 10^{-12} \mathrm{~m}$

$3125 \times 10^{-6} \mathrm{~m}$

$4.125 \times 10^{-6} \mathrm{~m}$

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