Question

le electric potential zero? Take the potential at infinity to be zero.
34. A wire of length 2 m, area of cross-section 0.5 mm? and resistivity 1.5 102m is connected
series with a cell of emf 4 V. If the current through the wire is 0.5 A, calculate: (a) the inter
resistance of the cell and (b) the rate of energy dissipated by the wire. Current
35. Calculate the
f​

Answer 1

Answer:

A potentiometer wire of length

and resistance

is connected in series with a battery of emf

and a resistance in its primary circuit. The null point corresponding to a cell of a emf

is obtained at a distance

. If the resistance in the primary circuit is doubled then the position of new null point will be.

Explanation:

0.4 L

0.5 L

0.6 L

0.8 L

Answer :

C

Solution :

Potential gradient

<br>

<br>

<br> Now potential gradient

<br>

Answer 2

check ur first answer if u to next solution then msg