SATHEE: Electrostatics Question 457

Electrostatics Question 457

Question: A charged particle of mass $m$ and charge $q$ is released from rest in a uniform electric field $E .$ Neglecting the effect of gravity, the kinetic energy of the charged particle after t second is [KCET 2003]

Options:

A) $\frac{E q^{2} m}{2 t^{2}}$

B) $\frac{2 E^{2} t^{2}}{m q}$

C) $\frac{E^{2} q^{2} t^{2}}{2 m}$

D) $\frac{E q m}{t}$

Show Answer

Answer:

Correct Answer: C

Solution:

When charge q is released in uniform electric field $E$ then its acceleration $a = \frac{q E}{m}$ (is constant) So its motion will be uniformly accelerated motion and its velocity after time t is given by $v = a t$

$= \frac{q E}{m} t$

therefore KE $= \frac{1}{2} m v^{2} = \frac{1}{2} {(\frac{q E}{m} t)}^{2} = \frac{q^{2} E^{2} t^{2}}{2 m}$

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Electrostatics Question 457

Question: A charged particle of mass $m$ and charge $q$ is released from rest in a uniform electric field $E .$ Neglecting the effect of gravity, the kinetic energy of the charged particle after t second is [KCET 2003]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Electrostatics Question 457

Question: A charged particle of mass m and charge q is released from rest in a uniform electric field E. Neglecting the effect of gravity, the kinetic energy of the charged particle after t second is [KCET 2003]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: A charged particle of mass $m$ and charge $q$ is released from rest in a uniform electric field $E .$ Neglecting the effect of gravity, the kinetic energy of the charged particle after t second is [KCET 2003]