81. What is the SI unit for magnetic field strength?
a) tesla
b) ampere/meter
c) coulomb
d) henry
Answer: b) ampere/meter
82. What is the SI unit for magnetic flux density?
a) tesla
b) ampere/meter
c) coulomb
d) henry
Answer: a) tesla
83. What is the SI unit for electric charge?
a) coulomb
b) volt
c) ohm
d) farad
Answer: a) coulomb
84. What is the SI unit for electric current?
a) coulomb
b) volt
c) ampere
d) farad
Answer: c) ampere
85. What is the SI unit for electric resistance?
a) coulomb
b) volt
c) ampere
d) ohm
Answer: d) ohm