The sum of the voltages around a closed loop in a circuit mu

The sum of the voltages around a closed loop in a circuit must equal zero is a consequence of: Newton\'s Second Law Kirchoff\'s Current Law Conversation of Mass Conservation of charge conservation of energy Four wires enter a junction. The first carries 4 A into the junction, the second carries 2 A away from the junction, the third carries 1 A into the junction, the fourth carries: 3 A away from the junction 7 A away from the junction 3 A into the junction 7 A into the junction 1A away from the junction Which of the following is a voltage controlled voltage source (circle your answer(s)): Current flows through a light bulb, if a wire is now connected across the bulb as depicted in the diagram below what happens? all the current continues to flow through the bulb half of the current goes through the wire and the other half through the bulb all the current flows through the wire the bulb gets brighter none of the above

Solution

12) E:conservartion of energy

kirchoff\'s voltage law : Kirchhoff\'s voltage law (KVL) The sum of all the voltagesaround a loop is equal to zero. This law is also calledKirchhoff\'s second law, Kirchhoff\'s loop (or mesh) rule, andKirchhoff\'s second rule.

Conservation of energy—the principle that energy is neither created nor destroyed—is a ubiquitous principle across many studies in physics, including circuits. Applied to circuitry, it is implicit that the directed sum of the electrical potential differences (voltages) around any closed network is equal to zero. In other words, the sum of the electromotive force (emf) values in any closed loop is equal to the sum of the potential drops in that loop (which may come from resistors).

13) A: 3amp away from junction, its using kirchoffs current law.

The principle of conservation of electric charge implies that: At any node (junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node. The algebraic sum of currents in a network of conductors meeting at a point is zero.

14) last diagram having Vx=gV

15)C: all the current flows thriough the wire, as circuit got short circuited.