1 Also, be sure that the wick is no longer than 1/8. 2  If it is, extinguish, trim to 1/8, and relight. 3  To minimize wax left on the sides of the jar, burn 3 hours at a time; it is normal for some wax to be left. 4  The amount will vary per color, fragrance and burning conditions.
Voltage. Voltage is electric potential energy per unit charge, measured in joules per coulomb (= volts). It is often referred to as electric potential, which then must be distinguished from electric potential energy by noting that the potential is a per-unit-charge quantity.oltage is electric potential energy per unit charge, measured in joules per coulomb (= volts).
1 Voltage is a measure of the energy carried by the charge. 2  Strictly: voltage is the 'energy per unit charge'. 3  The proper name for voltage is potential difference or p.d. for short, but this term is rarely used in electronics. 4  Voltage is supplied by the battery (or power supply). Voltage is used up in components, but not in wires. 2  We say voltage across a component. 3  Voltage is measured in volts, V. 4  Voltage is measured with a voltmeter, connected in parallel. 5  The symbol V is used for voltage in equations.