What is capacitance - Study guides, Class notes & Summaries

In capacitors, what is the purpose of the dielectric? - Prevent arcing within the capacitor Which of the following is true about capacitors in AC circuits? - Current leads voltage all the time What describes a capacitor s ability to store an electrical charge? - Capacitance which of the following statements is correct about polarized electrolytic capacitors? - Voltage polarity must be correct What is the time constant for a circuit with 150k ohms and 2 microfarad capacitor? - .3 seco...

AC Theory, Level 2 Final Test prep 2024 1.) A circuit that contains resistance and capacitance is called an RC circuit. - ANSWER True For a series RC circuit, the ? must be the same through all parts of the circuit. - ANSWER Current When solving a series RC circuit, the voltage is the reference. - ANSWER False What is the total resistance of the circuit shown? - ANSWER 11 Ω What is the total capacitance of the circuit shown? Calculate to the nearest whole number of the unit specifi...

Instrumental Analysis ACS Final Prep Exam with Questions and Answers. what are the difference between calibration sensitivity and analytical sensitivity - answercalibration sensitivity is the slope of a calibration curve at the concentration of interest while analytical sensitivity is a response to the noise ratio how to calculate calibration sensitivity - answery=mx+b (m is the calibration sensitivity) graph concentration vs mean analytical signal how to find the analytical sensitivity - ...

BICSI - Installer 1 – Exam Review | 120 Questions | 100% Correct Answers B A third 90-degree bend may be permitted in a conduit run if the run does NOT exceed ______? A 5 m (16.5') B 10 m (33') C 15 m (50') D 30 m (100') C Which of the following is a property of an electromagnetic field built around a conductor that opposes any changes in current flow in a circuit? A Impedance B Capacitance C Inductance D Resistance A Which of the following markings is used for no...

1. 8.33 meters is the full wavelength in air for what RF frequency: 36 mhz 2. Decimal 164 would appear as ______ in Binary: 3. A resistor has colorstripes yellow, voilet, silver it is: 470 MegOhm +/- -10 % 4. what is the total capacitance of three capacitors valued at 100 pf, 100 pf and 50 pf when connected in series: 2

Zener current will decrease - ANSWER-Refer to figure 1. If the load resistance R2 is reduced by half what happens what happens to zener diode? 4v - ANSWER-Refer to figure 1. The zener diode is designed to breakdown at 6VDC what is the voltage drop across R1 with a constant DC supply of 10VDC 30 rpm - ANSWER-An elevators motor rotates at 1200 rpm at contract speed and is geard at a ratio of 40:1. If the motor turns 40 rpm the sheave turns 1 rpm. What is the actual speed of the drive sheave ...

Henry - The basic unit of inductance Contracts - If the circuit current decreases, the magnetic field of an inductor Concentrate a magnetic field - The inductor is used to varies - The physical appearance of inductors Print or color code - Inductors have the value of their inductive capacity by Air and iron - The common inductors are Core type - Inductors are commonly identified by their Capacitor leads - Which of the following is not a factor for setting the capac...

What is the most important law applicable to the study of electricity? - Answer-Ohm's Law What are the elements of Ohm's Law? - Answer-Voltage, Current & Resistance What are four sources of electrical power? - Answer-Mechanical, chemical, photoelectric and thermal What does an electrical circuit consist of? - Answer-1. a source of electrical pressure 2. resistance 3. conductors What represents capacitance in an AC circuit? - Answer-a capacitor What is the function of a capaci...

What is the most important law applicable to the study of electricity? - Answer-Ohm's Law What are the elements of Ohm's Law? - Answer-Voltage, Current & Resistance What are four sources of electrical power? - Answer-Mechanical, chemical, photoelectric and thermal What does an electrical circuit consist of? - Answer-1. a source of electrical pressure 2. resistance 3. conductors What represents capacitance in an AC circuit? - Answer-a capacitor What is the function of a capaci...

PHY 112 - Rio Salado Quizzes Latest Update 100% Pass What is the unit of measurement for electric current? a) Volt b) Ohm c) Ampere d) Watt c) Ampere How do you calculate the resistance of a conductor? a) R = I / V b) R = V / I c) R = V I d) R = I + V b) R = V / I What is the definition of capacitance? a) The ability to conduct electricity 2 b) The ability to store electrical energy c) The resistance to current flow d) The power of a circuit b) The ability to sto...