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Kirchhoff's Rules When applying Kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the potential changes from one end of the resistor to the other. The circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. However, one resistor is marked incorrectly. Which one is it? a.R1 b.R2 c.R3 c.R4

Answer :

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Answer:

d. R4

Explanation:

Generally, the flow of current is always from the positive sign to the negative sign. In the resistors R1, R2, and R3, the direction of flow of current is from the positive sign to the negative sign. However, in the resistor R4, the direction of the flow of current is different from the conventional method. Therefore, the resistor R4 is marked wrongly.

Resistance R₄ is wrongly connected in the circuit.

Current always flow in the opposite direction of flow of electrons.

Since, Resistor acts as load in the electrical circuit. So, it will always consumed power.

Thus, In resistor current always flow from higher potential to lower potential i.e. from positive terminal to negative terminals.

In given circuit, current flowing in resistances R₁, R₂  and R₃ , from positive to negative. But in resistance R₄ current is flowing from negative to positive.

Therefore, Resistance R₄ is wrongly connected in the circuit.

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