Question

Please answer this question​

Answer 1

Answer:

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Explanation:

Answer 2

Answer :-

given total resistance of circuit , R = 20 Ω

so,

$\frac{1}{20} = \frac{1}{10+X}+ \frac{1}{25+75}$

$\frac{1}{20}=\frac{1}{10+X} + \frac{1}{100}$

$\frac{1}{20}=\frac{100+10+X}{100(10+X)}$

cross multiplying

$1000 + 100 X = 2200 + 20 X$

$80 X = 1200$

X = 15 Ω

Potential difference of circuit , V = 6 V

so,

current through the circuit , I = V / R

I = 6 / 20

I = 0.3 A .