Electric Potential

Front

What is electric potential?

Back

Electric potential is the amount of electric potential energy per unit charge at a point in an electric field, measured in volts (V).

Front

What happens to a proton moving in the direction of electric field lines?

Back

A proton moving in the direction of electric field lines moves from high potential to low potential and loses electric potential energy.

Front

How much kinetic energy does a proton gain when accelerated through a potential difference of 1.00 V?

Back

1.00 eV.

Front

If a proton is accelerated through a potential difference of 2V₀, what speed does it gain if it initially gained speed v₀ through V₀?

Back

The speed gained is v₀√2.

Front

What is the relationship between electric potential and kinetic energy?

Back

The work done on a charge by an electric field results in a change in electric potential energy, which converts to kinetic energy.

Front

What is the formula for calculating electric potential energy (U)?

Back

U = qV, where U is electric potential energy, q is charge, and V is electric potential.

Front

What is the unit of electric potential?

Back

The unit of electric potential is the volt (V), which is equivalent to one joule per coulomb (J/C).

Front

What is the significance of a uniform electric field?

Back

In a uniform electric field, the electric potential difference between two points is directly proportional to the distance between them.

Front

How does the mass of a proton compare to that of an electron?

Back

A proton is approximately 1836 times heavier than an electron.

Front

What is the potential difference (V) if a 4.0-g bead with a charge of 20 μC moves at 2.0 m/s?

Back

The potential difference V is 400 V.