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Physics-

General

Easy

Question

The magnitude of I in ampere is

0.1
0.3
0.6
None of the above

The correct answer is: 0.1

All the resistances are in parallel order, so voltage across them will be equal.

$therefore blank 60 I equals open parentheses 15 plus 5 close parentheses I subscript 1 end subscript$
$⟹ 60 I equals 20 I subscript 1 end subscript$
$⟹ I subscript 1 end subscript equals 3 I$
$A g a i n blank open parentheses 15 plus 5 close parentheses I subscript 1 end subscript equals 10 open parentheses 1 minus I minus I subscript 1 end subscript close parentheses$
$⟹ 2 I subscript 1 end subscript equals 1 minus I minus I subscript 1 end subscript$
$⟹ 2 open parentheses 3 I close parentheses equals 1 minus I minus 3 I$
$⟹ blank 6 I plus 4 I equals 1$
$⟹ 10 I equals 1$
$therefore I equals fraction numerator 1 over denominator 10 end fraction equals 0.1 A$

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