SATHEE: Electrostatics Question 247

Electrostatics Question 247

Question: There is a uniform electric field of strength $10^{3} V / m$ along y-axis. A body of mass 1g and charge $1 0^{6} C$ is projected into the field from origin along the positive x-axis with a velocity 10m/s. Its speed in m/s after 10s is (Neglect gravitation) [EAMCET 2001]

Options:

A) $| {\vec{E}}_{1} | = | {\vec{E}}_{2} |, V_{1} = V_{2}$

B) ${\vec{E}}_{1} \neq {\vec{E}}_{2}, V_{1} \neq V_{2}$

C) ${\vec{E}}_{1} \neq {\vec{E}}_{2}, V_{1} = V_{2}$

D) $| {\vec{E}}_{1} | = | {\vec{E}}_{2} |, V_{1} \neq V_{2}$

Show Answer

Answer:

Correct Answer: D

Solution:

Outside the charged sphere, (for equal distances from centre) if electric fields at two points are same then both points must be equipotential points.

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Electrostatics Question 247

Question: There is a uniform electric field of strength 103V/m along y-axis. A body of mass 1g and charge 106C is projected into the field from origin along the positive x-axis with a velocity 10m/s. Its speed in m/s after 10s is (Neglect gravitation) [EAMCET 2001]

Options:

Answer:

Solution:

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Question: There is a uniform electric field of strength $10^{3} V / m$ along y-axis. A body of mass 1g and charge $1 0^{6} C$ is projected into the field from origin along the positive x-axis with a velocity 10m/s. Its speed in m/s after 10s is (Neglect gravitation) [EAMCET 2001]