Electric Potential

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

• it is moving from low potential to high potential and gaining electric potential energy.
• it is moving from low potential to high potential and losing electric potential energy.
• it is moving from high potential to low potential and gaining electric potential energy.
• it is moving from high potential to low potential and losing electric potential energy.

Tags

NGSS.HS-PS3-5

NGSS.HS-PS3-2

The magnitude of electric potential is ______ at an infinite distance.

• 0

• negative infinity

• positive infinity

• 200

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Electrostatic potential energy is recorded in units of electron-Volts (eV). What is equivalent to 1 eV?

• 1.602×10⁻¹⁹ 𝐽

• 100 𝐽

• 220 𝐽

• 0.003 𝐽

At which point is the electric field the weakest?

• A because it is the furthest away
• A because the field lines are further apart
• C because the field lines are further apart
• C  because it is the furthest away

Tags

NGSS.HS-PS2-4

Q_A and Q_B are two charges creating an electric field. Based on the electric field lines, we can conclude

• Q_A and Q_B are both positive
• Q_A and Q_B are both negative
• Q_A is positive and Q_B is negative
• Q_A is negative and Q_B is positive

Tags

NGSS.HS-PS2-4

The direction of electric field lines shows the

• direction of the force on a test positive charge.

• size of the field.

• strength of the field.

• all of the above

Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire. No current will flow, if they have

• The same charge on each

• The same energy

• The same potential

• The same field on their surfaces

Inside a hollow charged spherical conductor, the potential

• Varies directly as the distance from the centre

• Varies inversely as the distance from the centre

• Varies inversely as the square of the distance from the centre

• Is constant

A hollow metal sphere of radius 5 cm is charged so that the potential on its surface is 10 V. The potential at the centre of the sphere is

• 0 V

• 10 V

• Same as at point 5 cm away from the surface

• Same as at point 25 cm away from the surface

If a unit positive charge is taken from one point to another over an equipotential surface, then

• Work is done on the charge

• Work is done by the charge

• Work done is constant

• No work is done