Potential difference at resistance R1 = IR1
Potential difference at resistance R2 = IR2
Potential difference at resistance R3 = IR3 The resultaint potential difference in the circuit is IR1
+ IR2 – V1 + IR3 – V2 = 0
Example 3: Find the resultaint potential diffrence
from the given figure based on Loops law.
Solution: Let us apply Loop law to the given circuit
mani2

From Loop ABCDEA
Potential difference at battery is -v1
Potential difference at resistances are IR1 + IR2
Resultant potential difference in the circuit is -V1 + IR1 + IR2 = 0
Example 4: Find the resultant potential diffrence from the given figure based on Loops law.
Solution: Let us apply Loop law to the given circuit

man

I - From the ABCDEFA loop Potential difference at batteries = -V1 + V2
Potential difference at resistancess = +I1 R1 - I2 R2
The resultaint Potential difference in the loop is -V1 + V2 + I1 R1 - I2 R2 = 0
II - From the AFEDCBA loop Potential difference at batteries = -V2 + V1
Potential difference at resistancess = +I2 R2 - I1 R1
The resultaint Potential difference in the loop is -V2 + V1 + I2 R2 - I1 R1 = 0
III - From the FEDGHF loop Potential difference at batteries = -V2
Potential difference at resistancess = +I2 R2 + (I1 + I2 ) x R3
The resultaint Potential difference in the loop is -V2 +I2 R2 + (I1 + I2 ) x R3 = 0
IV - From the FHGDEF loop Potential difference at battery = + V2
Potential difference at resistancess = - R3 x (I1 + I2 ) - I2 R2
The resultaint Potential difference in the loop is = + V2 - (I1 + I2 ) x R3 - I2 R2 = 0
V - From the HGCBAH loop Potential difference at battery = + V1
Potential difference at resistances = - R3 x (I1 + I2 ) - I1 R1
The resultaint Potential difference in the loop is = + V1 - (I1 + I2 ) x R3 - I1 R1 = 0

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