Advertisement Remove all ads

The Resistance of 11 is Connected in Right Gap. If Null Point is Obtained at a Distance of 45 Cm from the Left End, Find the Resistance of Metal Ring. - Physics

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

Two diametrically opposite points of a metal ring are connected to two terminals of the left gap of meter bridge. The resistance of 11 Ω is connected in right gap. If null point is obtained at a distance of 45 cm from the left end, find the resistance of metal ring.

Advertisement Remove all ads

Solution

R = 11Ω , lx = 45cm

lr=100-lx=55cm

Let x be theresistance of metal ring

∴Equivalent resistance in left gap

`1/R_p=1/(x`

`:. R_p=x/4`

From balancing condition

`:.R_p/R=l_x/(100-l_x)`

`(x`

`:.x/4=45/55xx11`

∴ x=9x4

∴x=36Ω

Concept: Meter Bridge
  Is there an error in this question or solution?

APPEARS IN

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×