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What's the Potential @ point B ?
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Asked by astutijoshi | 13 Nov, 2019, 02:01: AM
answered-by-expert Expert Answer
Value of the resistance left of 10V battery is not given, It is assumed that resistance value is 2 Ω .
 
Markings A, C, D, E and F are done in the given circuit to apply Kirchoff's voltage law (KVL ).
 
Assumed current flow direction is shown in the figure.
 
Let us apply KVL in the direction B-A-F-E-D-C-B
 
-3i +10 -2i -5 -2i-3i+15 = 0   or 20-10i = 0  or  i = 2 A
 
when 2 A current is passing through 3Ω resistance , voltage drop is 2×3 = 6 V  . 
 
Hence VD - VE = - 6V
 
Hence potential at B with respect to ground point F =  15 - 6 = 9 V
Answered by Thiyagarajan K | 13 Nov, 2019, 08:01: AM

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