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
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
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