4 A 4Ω 3 0 V. 30 i 2Ω 5Ω
KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
Sign Convention
Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
For the circuit shown in figure 4, write out all equations and units in
full. Assume that the voltage source V is equal to 200 V
4.1) Bereken die stroom i1 in ampere. / Calculate the current i1 in ampere.
4.2) Bereken die stroom i2 in ampere. / Calculate the current i2 in ampere.
4.3) Bereken die stroom i3 in ampere. / Calculate the current i3 in ampere.
4.4) Bereken die stroom ix in ampere. / Calculate the current ix in ampere.
4.5) Bereken die spanning in volts oor die 4 A stroombron. Neem aan dat die stroom i3 gelyk is aan 4 A. /
Calculate the voltage in volts over the 4 A current source. Assume that the current i3 is equal to 4 A.
4.6) Bereken die drywing in watt wat deur die 4 A stroombron gelewer word. / Calculate the power in watt
delivered by the 4 A current source.
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