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CBSE Class 10 Answered

The potential difference is 4.0 V. Find the value of X.
question image
Asked by Archita | 26 Feb, 2019, 02:35: PM
answered-by-expert Expert Answer
Figure shows the circuit showing the direction of current flow.
 
if we consider the path ABCD and applying kirchoff's rule for sign convention of potential difference, 
 
we have  -i×10 + 5 =  4 .............(1)
 
from (1), we get i = 1/10 A
 
if we consider the path AEFD and applying kirchoff's rule for sign convention of potential difference,
 
we have   i x + 2 = 4  .............(2)
 
by substituting i = 1/10 A in eqn.(2), we get  x = 20 Ω
Answered by Thiyagarajan K | 26 Feb, 2019, 04:22: PM

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