Question

Kirchhoff's Rules and Applying Them Kirchhoff's junction rule: The algebraic sum of the currents into (or out of) any junction in the circuit is zero. The figure (Figure 1) shows a circuit that illustrates the concept of loops, which are colored red and labeled loop 1 and loop 2. Loop 1 is the loop around the entire circuit, whereas loop 2 is the smaller loop on the right. To apply the loop rule you would add the voltage changes of all circuit elements around the chosen loop. The figure contains two junctions (where three or more wires meet) -they are at the ends of the resistor labeled R3. The battery supplies a constant voltage Vb, and the resistors are labeled with their resistances. The ammeters are ideal meters that read I1 and I2 respectively. The direction of each loop and the direction of each current arrow that you draw on your own circuits are arbitrary. Just assign voltage drops consistently and sum Part A The junction rule describes the conservation of which quantity? Note that this rule applies only to circuits that are in a steady state. charge voltage resistance Part B Apply the junction rule to the junction labeled with the number 1 (at the bottom of the resistor of resistance R2). Answer in terms of given quantities, together with the meter readings I1 and I2 and the current I3.

          Kirchhoff's Rules and Applying Them
Kirchhoff's junction rule: The algebraic sum of the currents into (or out of) any junction in the circuit is zero.
The figure (Figure 1) shows a circuit that illustrates the concept of loops, which are colored red and labeled loop 1 and loop 2. Loop 1 is the loop around the entire circuit, whereas loop 2 is the smaller loop on the right. To apply the loop rule you would add the voltage changes of all circuit elements around the chosen loop. The figure contains two junctions (where three or more wires meet) -they are at the ends of the resistor labeled R3. The battery supplies a constant voltage Vb, and the resistors are labeled with their resistances. The ammeters are ideal meters that read I1 and I2 respectively.
The direction of each loop and the direction of each current arrow that you draw on your own circuits are arbitrary. Just assign voltage drops consistently and sum
Part A
The junction rule describes the conservation of which quantity? Note that this rule applies only to circuits that are in a steady state.
charge
voltage
resistance
Part B
Apply the junction rule to the junction labeled with the number 1 (at the bottom of the resistor of resistance R2).
Answer in terms of given quantities, together with the meter readings I1 and I2 and the current I3.

Kirchhoff's Rules and Applying Them
Kirchhoff's junction rule: The algebraic sum of the currents into (or out of) any junction in the circuit is zero.
The figure (Figure 1) shows a circuit that illustrates the concept of loops, which are colored red and labeled loop 1 and loop 2. Loop 1 is the loop around the entire circuit, whereas loop 2 is the smaller loop on the right. To apply the loop rule you would add the voltage changes of all circuit elements around the chosen loop. The figure contains two junctions (where three or more wires meet) -they are at the ends of the resistor labeled R3. The battery supplies a constant voltage Vb, and the resistors are labeled with their resistances. The ammeters are ideal meters that read I1 and I2 respectively.
The direction of each loop and the direction of each current arrow that you draw on your own circuits are arbitrary. Just assign voltage drops consistently and sum
Part A
The junction rule describes the conservation of which quantity? Note that this rule applies only to circuits that are in a steady state.
charge
voltage
resistance
Part B
Apply the junction rule to the junction labeled with the number 1 (at the bottom of the resistor of resistance R2).
Answer in terms of given quantities, together with the meter readings I1 and I2 and the current I3.

Added by Alexander A.

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