Question

(c) 3/10A
(d) 1/2 A
52. 1
47. What is the resistance between A and B in the fol-
lowing circuit ?
1Ω
1Ω
M
W
53. 1
10
2Ω
M
1Ω
2Ω
ΜΜΜ
54. 1
1Ω
B B
Α.
2Ω
(a) 1Ω
(c) 1/2 Ω
(b) 2Ω
(d) 3/2 Ω​

Answer 1

ANSWER

Formula for equivalent resistance in series

R=R

1

+R

2

Formula for equivalent resistance in parallel

R

1

=

R

1

1

+

R

2

1

Now, given circuit can be rearrange as in figure 2

Using formula for equivalent resistance in parallel

R

1

=

R

1

1

+

R

2

1

Equivalent resistance beween B and C =

2

R

and it is in series with resistance(AC), So resistance of lower branch =

2

3R

Now, equivalent resistance between A and B

R

eq

1

=

R

1

+

3R

2

⇒R

eq

=

5

3R

Therefore, D is correct option.