Amps, or amperes, are a measure of electrical current; ohms are a measure of electrical resistance. Both are widely used in physics.
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Just use Ohms Law: V=IR, that is, voltage (in Volt) = current (in Ampere) x resistance (in Ohms).
Inductive reactance does NOT have it own sign or symbol. Rather, it uses Ohms as a quantifier. But Capacitive reactance ALSO uses Ohms as a quantifier. Fortunately, 1 Ohm of Inductive reactance is cancelled by 1 Ohm of Capacitive reactance at the same frequency of measurement.
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You must know the applied voltage to determine the answer. According to Ohm's law: I = E/R (current equals voltage divided by resistance) So, if the voltage were, say, 16 volts, then the current through the 8 ohm resistor would be two amps: 2 = 16 / 8
The unit for measuring resistance is the Ohm, which usually uses the Greek letter Omega. In circuit diagrams, the Omega is often left out and the metric prefix is used instead (k for kilo-ohm, M for mega-ohm). The letter E is used to represent ohms (ex. 120E = 120 ohms, 1E2 = 1.2 ohms).