limonene-8,9-diol, and monohydroxylated limonene.8,10 About 25-30 percent of an oral dose of d-limonene in humans was found in urine as d-limonene-8,9-diol and its glucuronide; about 7-11 percent was eliminated as perillic acid and its metabolites.6 Safety D-limonene is considered to have fairly low toxicity.
In order to measure the voltage ,voltmeter should be connected in parallel. Voltmeter provides very high resistance . When voltmeter connected in parallel..so no current flowing through it due to very high resistance.. Voltage drop will occur..we get some voltage so its indicates voltage ( as per definition).
This time, you do not need to break the circuit. The voltmeter is connected in parallel between the two points where the measurement is to be made. Since the voltmeter provides a parallel pathway, it should take as little current as possible. In other words, a voltmeter should have a very HIGH resistance.