Question

a piece of wire of resistance R is cut into 8 equal parts these parts are then connected in parallel if equivalent resistance of this combination is RP then find to 2RP/9R​

Answer 1

Step-by-step explanation:

We know,

1.When a resistance is divided into n identical resistances, each of resistance (say R') become

n

R

.

2.When n identical resistors each of resistance R', are connected in parallel, the equivalent resistance is

n

R

′

The resistor R ,when divided into five parts become resistors of resistance

5

R

each.

The recombination of five resistors, each of resistance

5

R

, gives a resistor of equivalent resistance R' of value

5

5

R

=

25

R

Hence,

R

′

R

=

1

25