Basic Electrical Principles – Comprehensive Guide
What is a coulomb (Q)? Right Ans - A unit of one charge in which 1
electron= -1.6 X 10^-19 Q
What is Current Flow (Amps)? Right Ans - The rate of electron flow. A=1
Q/sec=6.2X10^18 electrons/sec.
What is voltage (V)? Right Ans - The force (difference in potential in EMF)
that causes electrons to move
What is Resistance (R)? Right Ans - The property of materials that opposes
or resists current by converting electricity to heat.
What factors affect resistance of a material? Right Ans - Length, Material
(specific resistance), Cross-sectional area (R=ρL/A)
What is Ohms Law? Right Ans - I=V/R
What is Equivalent Resistance? Right Ans - Equivalent Resistance is
essentially the total resistance of a circuit, and differs depending on the what
is in series vs parallel.
What is Kirchhoff's Laws? Right Ans - 1. The sum of all the currents
entering a junction equal the sum of all the current leaving the junction.
2. The sum of all the potential differences in a closed loop id equal to zero
What is Energy? Right Ans - Energy (E), is the ability or capacity to do work
measured in joules
What is Power? Right Ans - Power (P), refers to how rapidly energy is
being used or converted to another form. The rate of doing work.
What is Capacitance? Right Ans - Capacitance (C), is the property of an
electrical circuit that opposes change to voltage by using energy stored in an
electric field. C=Q/V where C is capacitance, Q is stored charge, and V is
voltage
What is a coulomb (Q)? Right Ans - A unit of one charge in which 1
electron= -1.6 X 10^-19 Q
What is Current Flow (Amps)? Right Ans - The rate of electron flow. A=1
Q/sec=6.2X10^18 electrons/sec.
What is voltage (V)? Right Ans - The force (difference in potential in EMF)
that causes electrons to move
What is Resistance (R)? Right Ans - The property of materials that opposes
or resists current by converting electricity to heat.
What factors affect resistance of a material? Right Ans - Length, Material
(specific resistance), Cross-sectional area (R=ρL/A)
What is Ohms Law? Right Ans - I=V/R
What is Equivalent Resistance? Right Ans - Equivalent Resistance is
essentially the total resistance of a circuit, and differs depending on the what
is in series vs parallel.
What is Kirchhoff's Laws? Right Ans - 1. The sum of all the currents
entering a junction equal the sum of all the current leaving the junction.
2. The sum of all the potential differences in a closed loop id equal to zero
What is Energy? Right Ans - Energy (E), is the ability or capacity to do work
measured in joules
What is Power? Right Ans - Power (P), refers to how rapidly energy is
being used or converted to another form. The rate of doing work.
What is Capacitance? Right Ans - Capacitance (C), is the property of an
electrical circuit that opposes change to voltage by using energy stored in an
electric field. C=Q/V where C is capacitance, Q is stored charge, and V is
voltage
