Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationField & ForceMedium2 minPYQ_2012

PhysicsMediumsingle choice

The electric field intensity just sufficient to balance the earth's gravitational attraction on an electron will be: (given mass and charge of an electron respectively are $9.1 \times 1 0^{- 31} kg$ and $1.6 \times$ $1 0^{- 19} C .)$

Options:

Answer:

Solution:

$- eE = mg$ $E = - \frac{9.1 \times 1 0 ^{- 31} \times 10}{1.6 \times 1 0 ^{- 19}} = - 5.6 \times 1 0^{- 11} N / C$

Stream:BITSATSubject:PhysicsTopic:GravitationSubtopic:Field & Force

⏱ 2mℹ️ Source: PYQ_2012

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