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ICSE Class 10 Answered

ex. 8b numerical 24
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Asked by nilesh.dhote74 | 12 May, 2020, 03:14: PM
answered-by-expert Expert Answer
A s space p e r space t h e space o h m apostrophe s space l a w
V equals I R
4 equals 0.4 cross times R subscript e f f end subscript
R subscript e f f end subscript equals 10 o h m
T h e space t o t a l space r e s i s tan c e space o f space t h e space c i r c u i t space i s space 10 space o h m s space a n d space 20 space o h m space a n d space R space a r e space c o n n e c t e d space i n space p a r a l l e l
T h e r e f o r e
1 over R subscript e f f end subscript equals 1 over R plus 1 over 20
1 over 10 equals 1 over R plus 1 over 20
1 over R equals 1 over 10 minus 1 over 20
R equals 20 o h m
space A s space b o t h space t h e space r e s i s tan c e space a r e space c o n n e c t e d space i n space p a r a l l e l space a n d space h a v e space e q u a l space r e s i s tan c e s
0.4 equals I subscript 20 plus I subscript 20
0.4 equals 2 I subscript 20
I subscript 20 equals 0.2 space A
T h e r e f o r e space h e space c u r r e n t space i n space R space i s space 0.2 space A
Answered by Utkarsh Lokhande | 12 May, 2020, 03:36: PM
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