Electrostatics… | NUST Entrance Test Physics

For a proton moving in the direction of the electric field

Difficulty: Easy

A:

Its potential energy increases and its electric potential decreases

B:

Its potential energy increases and its electric potential increases

C:

Its potential energy decreases and it electric potential increases

D:

Its potential energy decreases and its electric potential decreases

If electron is moving along positive x-axis and $\rm{V=5x+3}$ then it

Difficulty: Easy

A:

Deflects down

B:

Deflects up

C:

Speeds down

D:

Speeds up

If a potential difference of $\rm{V}$ appears on the plates of a capacitor with capacitance $\rm{C}$, then energy stored will be

Difficulty: Easy

A:

\rm{2\,CV^{2}}

B:

\rm{\frac{1}{2}\,CV^{2}}

C:

\rm{\frac{1}{2}\,C^{2}V}

D:

None of the above

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