CH6 Circuits

Question 1

Current Equation and Units

Kirchhoff’s junction rule

Answer 1

I = Q / t

1 A = 1 C/s

Kirchhoff’s junction rule: Current in 1 = current out 2 + current out 3

Question 2

Resistors Equation and Units

Shorthand equation to calculate sum of resistors in parallel

Answer 2

R = pL / A

p = resistivity (ohm x meter)

L = Lenght (meter)

A = Cross sectinal area (mˆ2)

Rx = (R1xR2) / (R1 + R2)

Question 3

Ohms Law

Power Equations

Answer 3

V = IR

P = IV = I²R = V² / R

Question 4

Capacitors what are they and equation for capacitance

What is a Dielectric material what does it do

Potential energy formula of a capacitor

Answer 4

Capacitors are able to hold charge at a particular voltage i.e a defibrillator

C = Q / V

1 F = 1 Coulomb / V

Is insulation from a material that is introduced b/w plates and it increases capacitance by a factor (dielectric constant k) k can never be less than 1 because it cant never decrease C

U = 1/2 CV²

Question 5

Conductivity

Answer 5