Home
Class 12
PHYSICS
In the adjacent circuit a resisttance R ...

In the adjacent circuit a resisttance R is used. Initially with 'wire AB' not in the circuit, the galavanometer shhows a deflection of d divisions. Now, the wire AB is conneted parallel to the galvanometer and the galvanometer shows a deflection defiction nearly d/2 divisions. Therefore

A

A. R=G

B

B. `RltltG`

C

C. `RgtgtG`

D

D. `R=(SG)/(S+G)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Exrcies-3(PART-1)|22 Videos

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Exrcies-3(PART-2)|23 Videos

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Exercise-2 (Part-3)|22 Videos

  • COMMUNICATION SYSTEMS

    RESONANCE ENGLISH|Exercise Exercise 3|13 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP.No.71|1 Videos

Similar Questions

Explore conceptually related problems

In the circuit, the galvanometer G shows zero deflection. If the batteries A and b have negligible internal resistance, the value of the resistor R will be -

In the circuits shown in the figures, the galvanometers show no deflection. Find the ratio of R_(1) and R_(2) .

In the given circuit, no current is passing through the galvanometer. If the cross sectional diameter of the wire AB is doubled, then for null point of galvanometer, the value of AC would be:

In the circuit, given figure below the length of the wire AB = 400 cm. Where should the jockey J be placed, so that the galvanometer shows a zero deflection?

The potentiometer wire AB shown in figure is 40 cm long. Where should the free end of the galvanometer be connected on AB so that the galvanometer may show zero deflection?

The potentiometer wire AB shown in figure is 40 cm long. Where the free end of the galvanometer should be connected on AB so that the galvanometer may show zero deflection?

In the potentiometer circuit shown the galvanometer shows no deflection for AD = 35 cm. The resistance of wire AB is 18 Omega and its length is 50 cm . Calculate the emf E of the cell

The following combination are concerned with experiments of the characterization and use of a moving coil galvanometer. The series combination of variab resistance R, one 100 Omega resistor and moving coil galvanometer is connected to a mobile phone charger having negligible internal resistance. The zero of the galvanometer lies the centre and the pointer can move 30 division full scale on either side depending on the directin of current. The reading of the galvanometer is 10 divisions and the voltages across the galvanometer and 100 Omega resistor are respectively 12mV and 16 mV. The series combination of the galvanometer with a resistnce of R is conneted across an ideal voltage supply of 12 V and this time the galvanometer shows full scale defiention of 30 divisions. The value of R is nearly

In the circuit shown, the length of AB is 100 cm. The length j_1 for which the galvanometer shows zero deflection is __________ cm.

A nichrome wire AB, 100 cm long and of uniform cross section cross section is mounted on a meter scale the points A and B coinciding with 0 cm and 100 cm marks respectively. The wire has a resistance S = 50 ohm, Ay point C along this wire, between A and B is called a variable point to which on end of and electrical element is commeted. In the following questions this arrangement will be referred to as 'wire AB'. In the circuit adjacent arrangement it is found that deflection in the galvanometer is 10 divisions. Also the voltage across the 'wire AB' is equal to the across the galvanometer. the current sensitivity of the galvanometer is about.