Related Question
The Farad is the practical and the Sl unit of capacitance. The unit, named after Michael Faraday (1791-1867), was first suggested by Latimer Clark in 1867. The capacitor has a capacitance of 1 farad when a charge of 1 coulomb raises the potential between its plates to 1 volt.
The S.I unit of Inductance is Henry.
The S.I unit of resistance is OHM.
The S.I unit of Reluctance is amp-turns/Weber or Henry−1
Related Question
According to Kirchhoff’s Current Law: At any point in an electrical circuit, the sum of currents flowing towards that point is equal to the sum of currents flowing away from that point.
∴ I1 = 1 + 3 = 4A
V = IR
∴ V1 = I1R = 8 × 4
V1 = 32Ω
The resistance of the conductor is determined by the
R = ρL/A
Where
ρ = Resistivity of the conductor
L = Length of the conductor = 10 m
A = Area of the conductor = πR2 = 3.14 × 0.22 = 0.125 m2
R = Resistance = 2 Ω
Therefore the resistivity is
ρ = A × R ⁄ L
= 0.125 × 2 ⁄ 10
ρ = 0.025 Ω-m
Given
Resistance R = 5Ω
Current I = 2 A
Power dissipated by the resistor is
P = I2R
P = 22 × 5
P = 20 watts
According to Kirchhoff’s Current Law: At any point in an electrical circuit, the sum of currents flowing towards that point is equal to the sum of currents flowing away from that point.
From the above Diagram
Current Flowing towards the Point: I2, I6, I4
Current Flowing Away from the Point: I1, I3, I5
Hence I2 + I6 + I4 = I1 + I3+ I5
Putting the value of the current
2A + 7A + I4 = 4A + 3A + 8A
I4 = 15A − 9A = 6A
I4 = 6A
Although the Thevenin’s theorem and Norton’s theorem can be used to solve a given network, yet the circuit approach differs in the following respects:
A Norton’s theorem is converse (opposite) of Thevenin’s theorem in the respect that Norton equivalent circuit uses a current generator instead of the voltage generator and the resistance RN (which is the same as RTH) in parallel with the generator instead of being in series with it.
Thevenin’s theorem is a voltage form of an equivalent circuit whereas Norton’s theorem is a current form of an equivalent circuit.
To Convert Thevenin equivalent circuit into Norton’s equivalent circuit the following step is involved
RN = RTH
IN = ETH ⁄ RTH