Question

pls help me with this​

Answer 1

Hii,

Answer:

5 ohm

Explanation:

Answer in attachment

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Answer 2

Answer:

(2) 5 ohm

Explanation:

We are given that five resistance each of 10 ohm are connected in circuit .

We have to resultant resistance between A and B.

Two resistance are connected in series because current flowing through these two resistance are same.

Therefore, resultant resistance of two resistance in series=$R_1+R_2=10+10=20 ohm$

Two resistance out of 3 resistance are connected in series

Therefore, resultant resistance=$10+10=20 ohm$

20 ohm , 20 ohm and 10 ohm are connected in parallel because current flowing these resistance are different

$\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}$

$=\frac{1}{R}=\frac{1}{20}+\frac{1}{20}+\frac{1}{0}=\frac{1+1+2}{20}=\frac{4}{20}$

$R=\frac{20}{4}=5 ohm$

Hence, the resultant resistant between A and B=R=5 ohm