a) State Kirchoff's first and second laws and name the fundamental physics principle that each law represents. b) Using Kirchoff's Laws in the circuit below i) Write TWO loop equations for the circuit. ii) Determine the value of the current flowing through the 6 resistor. 60 wwww 4V 12 SV 1.20 0.3Ω

Introductory Circuit Analysis (13th Edition)
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a) State Kirchoff's first and second laws and name the fundamental physics principle
that each law represents.
b) Using Kirchoff's Laws in the circuit below
i) Write TWO loop equations for the circuit.
ii) Determine the value of the current flowing through the 62 resistor.
60
www
4V
1
1₂ 5V
c) Show that the drift velocity v of electrons and the current / in amps in a conducting
wire of cross-sectional area A and length L, are related by the formula
I=qnAv
where q is the electron charge and n is the number of electrons per unit volume of the
wire.
d) The number density of electrons in copper is about 1029 per m³
Estimate the drift velocity of the electrons in a copper wire of diameter 2mm carrying a current
of 8 A. [Assume electron charge = -1.6 × 10-¹9 C]
1.20
0.30
Transcribed Image Text:a) State Kirchoff's first and second laws and name the fundamental physics principle that each law represents. b) Using Kirchoff's Laws in the circuit below i) Write TWO loop equations for the circuit. ii) Determine the value of the current flowing through the 62 resistor. 60 www 4V 1 1₂ 5V c) Show that the drift velocity v of electrons and the current / in amps in a conducting wire of cross-sectional area A and length L, are related by the formula I=qnAv where q is the electron charge and n is the number of electrons per unit volume of the wire. d) The number density of electrons in copper is about 1029 per m³ Estimate the drift velocity of the electrons in a copper wire of diameter 2mm carrying a current of 8 A. [Assume electron charge = -1.6 × 10-¹9 C] 1.20 0.30
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