Class-12,Electrostatic Potential & Capacitance

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Name of Student *

Contact No. *

Q.1) Electric potential energy of two point charges q and q0 is *

1 point

Option 1

Option 2

Option 3

Option 4

Which of the following methods can be used to charge a metal sphere positively without touching it? Select the most appropriate. *

1 point

Connect the positive terminal of a battery and float the other end of the battery.

Rub it with a piece of fur.

Rub it with a piece of silk.

Bring a negatively charged rod near the sphere and touch it to ground for a short while.

Q2) Which of the following is correct for energy of a dipole in a uniform electric field?

1 point

Dipole aligns along electric field and its energy decreases

Energy is gained

It only aligns itself along the electric field

Potential energy remains constant

Clear selection

Q3) *

1 point

Option 1

Option 2

Option 3

Option 4

Q4) Electric Potential V at a point in an electrical field is *

1 point

potential energy of a unit charge placed at that point.

potential energy of a proton placed at that point.

potential energy of an electron placed at that point.

potential energy of all charges in the field.

Q5) In circuits, a difference in potential from one point to another is often called *

1 point

voltage

volts

field

None of these

Q6) If a positive charge moves in the direction of the electric field *

1 point

Field does negative work on charge, potential energy decreases

Field does positive work on charge, potential energy decreases

Field does positive work on charge, potential energy increases

Field does negative work on charge, potential energy increases

Q7) If a positive charge moves opposite to the direction of the electric field, the field does _______ work on charge and potential energy __________ *

1 point

positive, decreases

negative, decreases

negative, increases

positive, increases

Q8) Electric potential is potential energy *

1 point

per unit charge

per unit volume

per unit time

none of these

Q9) The unit of potential difference as used in electrical circuits is *

1 point

joule

volt

coulomb

electron volt

Q10) *

1 point

Option 1

Option 2

Option 3

Option 4

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