Physics 30 Unit B Concepts Quiz

Which of the following formulas is used to calculate the electric field due to a point charge?

• F=ma

• E=kq/r²

• B=FIl

• F=qE

Which unit is equivalent to one electron volt?

• 1.6 x 10-19 J

• 6.24 x 1018 J

• 1 J

• 9.8 J

What does the third hand rule help you find?

• Direction of current in a wire

• Direction of magnetic field due to a current

• Direction of magnetic force on a charged particle

• Direction of electric field due to a point charge

Which principle best explains the charging of an object by electrostatic induction?

• Coulomb's Law

• Faraday's Law

• Lenz's Law

• Gauss's Law

Which formula is used to calculate the electric force between two charges?

• F=kq1q₂/r²

• F=ma

• F=qvB

• E=mc²

What is the formula to find the electric field due to a point charge?

• E=kq/r²

• E=Fq

• E=qA

• E=IlB

What is the formula to find the magnetic force on a charged particle moving with velocity in a magnetic field?

• F=ma

• F=qvB

• F=kq₁q₂/r²

• F=IlB

What is the unit of electric charge?

• Newton

• Joule

• Volt

• Coulomb

Which formula is used to calculate electric potential due to a point charge?

• V=kq/r

• V=Eq

• V=Ed

• V=1/2mv²

What happens to the electric force between two charges if the distance between them is doubled?

• Halves

• Quadruples

• Remains the same

• Reduces to one-fourth