The megohm is one million ohms.
The microhm is one millionth of an ohm.
ELECTROMOTIVE FORCE—E.—The Volt is that electromotive force which maintains a current of one ampere in a conductor having a resistance of one ohm. The electromotive force of a Clark standard cell at a temperature of 15 degrees centigrade is 1.434 volts. The volt is equal to a hundred million, 10^8, C. G. S. units of electromotive force.
CURRENT—C.—The Ampere is that current which will decompose 0.09324 milligramme of water (H2O) per second or deposit 1.118 milligrammes of silver per second. It is equal to one-tenth of a C. G. S. unit of current.
The milliampere is one thousandth of an ampere.
QUANTITY—Q.—The Coulomb is the quantity of electricity conveyed by an ampere in a second. It is equal to one-tenth of a C. G. S. unit of quantity.
The micro-coulomb is one millionth of a coulomb.
CAPACITY—K.—The farad is that capacity of a body, say a Leyden jar or condenser, which a coulomb of electricity will charge to the potential of a volt. It is equal to one thousand-millionth of a C. G. S. unit of capacity.
The micro-farad is one millionth of a Farad.
By Ohm's Law, Current = Electromotive Force/ Resistance,