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CBSE Class 10 Answered

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Asked by lstyagi1996 | 20 Jun, 2019, 03:31: PM
answered-by-expert Expert Answer
Potential across resistors R1, R2 and R3,
 
Potential difference across the circuit is 6 V.
 
The equivalent resistance in the circuit is
12 ohms resistors are connected in parallel. 
Thus, 
Rp = 1/12 + 1/12 = 6 ohms 
 
Thus,
Req = 6 +6 = 12 ohms. 
 
Thus, the 
Total current in the circuit is, 
V = IR 
6 = I x 12 
I = 6/12 = 0.5 A 
 
Thus, the Potential difference across, 
R1 = 6 ohms is, 
V = I R 
V = 0.5 x 6 = 3 V 
Thus, 
Potential difference across R2 is, 
 
V = Vs + Vp 
Vp =6 - 3 = 3 V 
 
As the R2 and R3 are connected in parallel the potential difference across the R3 will be same as that across R2. 
Thus potential difference across R3 = 3 V  
 
 
 
Answered by Shiwani Sawant | 20 Jun, 2019, 04:24: PM
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