NEET UG PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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Analyzing +4 | -1

Statement-I: A charge

q

is lying at the centre of the line joining two similar charges

Q

each. The system will be in equilibrium if

q=Q / 4

Statement-II: For

Q

to be in equilibrium, sum of the forces on

Q

due to rest of the two charges must zero.

View answer and explanation

Correct option: A

Statement-I is True, statement-II is True

Statement-I is false, Statement-II is true. The system will be in equilibrium if q = -Q/4. Statement II is true because the sum of forces on Q due to other charges must be zero for equilibrium.

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The ratio of magnitude of electric displacement (D) and electric field (E) is Gauss’s Law is valid for In hydrogen like system the ratio of coulombian force and gravitational force between an electron and a proton is in the order of: Statement-1:

\overrightarrow{{E}}

in outside velocity of a conductor depends only on the local charge density

\alpha

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Statement-2:

\overrightarrow{{E}}

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\frac{\sigma}{\varepsilon_0}

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km

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P \times 10^3

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{P}

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r