Electricity and Magnetism Quiz

The unit of electric flux density (D) is:

• V/m

• C/m²

• N/C

• F/m

Coulomb’s Law is applicable to:

• Steady currents

• Static charges

• Moving charges

• Magnetic fields

Gauss’s law is a relation between:

• Electric field and distance

• Electric flux and charge enclosed

• Voltage and current

• Capacitance and distance

Electric field intensity due to an infinite line charge varies as:

• 1/r

• 1/r²

• r

• Constant

Electric field is the negative gradient of:

• Magnetic field

• Electric potential

• Current density

• Magnetic potential

The unit of magnetic field intensity (H) is:

• T

• A/m

• Wb

• A·m

Magnetic field inside a long solenoid is:

• Zero

• Constant

• Varies linearly

• Inversely proportional to radius

Ampere’s circuital law relates magnetic field to:

• Electric field

• Current

• Charge

• Voltage

Biot–Savart law gives the:

• Electric potential due to point charge

• Magnetic field due to current element

• Capacitance of a system

• Electric field due to surface charge

A moving charge produces:

• Only electric field

• Only magnetic field

• Both electric and magnetic fields

• Neither field