Concept of Field

Select the diagram with the weakest magnetic field

Tags

NGSS.MS-PS2-3

What is the electric field intensity at a point where a force of 2 N is acting on a charge of 4 C?

• 0.5 N/C

• 8 N/C

• 0.25 N/C

• 2 N/C

Tags

NGSS.HS-PS3-5

The direction of the electric field is always:

• From positive to negative charge

• From negative to positive charge

• In the direction of current

• Opposite to the direction of current

Which of the following is not a unit of magnetic field strength?

• Tesla

• Gauss

• Newton

• Weber/m²

If the distance between a point charge and a point in space is doubled, the electric field intensity at that point will:

• Double

• Quadruple

• Halve

• Reduce to one-fourth

Tags

NGSS.HS-PS2-4

What is the formula to calculate the electric field intensity (E) created by a point charge (Q) at a distance (r)?

Tags

NGSS.HS-PS2-4

Which of the following statements about magnetic fields is true?

• Magnetic fields do not exert forces on stationary charges.

• Magnetic fields always exert forces on stationary charges.

• Magnetic fields are only around permanent magnets.

• Magnetic fields can be blocked completely by metallic shields.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The magnetic field lines around a straight conductor carrying current are:

• Parallel straight lines along the length of the conductor

• Concentric circles centered on the conductor

• Radial lines emanating from the conductor

• Elliptical loops around the conductor

Tags

NGSS.HS-PS2-5

Tags

NGSS.HS-PS2-4

Which of the following is a correct representation of Coulomb's Law?

• F = k * q₁ * q₂ / r²

• F = k * q₁ * q₂ * r

• F = q₁ * q₂ / (4πε₀ * r²)

• F = k * q₁ + q₂ / r²

Tags

NGSS.HS-PS2-4