Question

the length of a potentiometer wire is 1. the cell is balanced at a length of 1/3 from the positive end of the wire. if the length of the wire is increased by 1/2. at what distance will the same cell give the balance point?​

Answer 1

Answer:

Potential gradient , K=

L

V

Here, K

1

=

l

V

,K

2

=

(3/2)l

V

=

3

2

K

1

Now,

E

2

E

1

=

K

2

l

2

K

1

l

1

or

E

E

=

(2/3)K

1

l

2

(K

1

)(l/3)

or l

2

=

2

l