physics conceptual questions

Two point charges each experiences a 1-N electrostatic force when they are 2cm apart. If they are moved to a new seperation of 8cm, what is the magnitude of the electric force on each of them

1/16 N

Three identical capacitors are connected in series across a potential source (battery). If a charge of Q flows into this combination of capacitors, how much charge does each capacitor carry?

Q

In the hydrogen atom (one positively charged proton, one negatively charged electron) which of the following is true about the electric forces and resultant accelerations

both forces have the same magnitude and the electron feels the greatest acceleration

If the resistance in a constant voltage circuit is doubled, the power dissipated by that circuit will

decrease to one-half its original value

The plates of a parallel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field between the plates during this process?

it decreases

As a proton moves in the direction of the electric field lines

it is moving from high potential to low potenital and losing electric potential energy

A proton is accelerated from rest through a potential difference V0 and gains a speed v0. If it were accelerated instead through a potential difference of 2V0, what speed would it gain?

root 2 Vo

Conventional current (+ charge) is passing through a resistor, from left (a) to right (b). Which of the following statements are correct?

the electric potential is lower at point b than at point a

A hydrogen nucleus, which has a charge +e, is situated to the left of a carbon nucleus, which has a charge +6e. Which statement is true?

the electrical force experienced by the hydrogen nucleus is to the left, and the magnitude is equal to the force exerted on the carbon nucleus

when unequal resistors are connected in parallel in a circuit

the potential drop is always the same across each resistor

A proton and an electron are released from rest, with only the electrostatic force acting. Which of the following statements must be true about them as they move toward each other?

their electric potential energy keeps decreasing

Which of the following is true for two different resistors connected in parallel to a battery?

they have the same voltage but different currents