Question

if the total resistance of the given circuit is 20 ohm then calculate the resistance of a resistor x and current flowing through it if r1=10 ohm x and r2=25 ohm and 15 ohm​

Answer 1

Answer:

dd all of the resistances across the circuit together to calculate the total resistance. If you don't know the individual values, use the Ohm's Law equation, where resistance = voltage divided by current. Plug in the values for voltage and current and solve for R to get the total resistance in a circuit.

Explanation:

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Answer 2

X=15 ohm

I=0.3 A

Explanation:

Given:

$R_1=10\Omega$

$R_2=X$

$R_3=25\Omega$

$R_4=75\Omega$

R1 and R2 are connected in series and R3 and R4 are connected in series .

Therefore,

$R_s=R_1+R_2=10+X$

$R'_s=R_3+R_4=25+75=100\Omega$

Rs and R's are connected in parallel.

$\frac{1}{R}=\frac{1}{R_s}+\frac{1}{R'_s}$

R=20 ohm

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

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

$\frac{5-1}{100}=\frac{1}{X+10}$

$\frac{4}{100}=\frac{1}{10+X}$

$X+10=\frac{100}{4}=25$

$X=25-10=15\Omega$

Potential difference=V=6 V

$I=\frac{V}{R}=\frac{6}{20}=\frac{3}{10}=0.3 A$

Hence, the current flowing through the circuit=0.3 A

#Learn more:

https://brainly.in/question/15559892:Answered by Chandanpratik