One ampere of current enters the junction A of a wheatstone bridge ABCD with `AB=2Omega,BC=2Omega,AC=4Omega,CD=2Omega and R_(g)=4Omega`. Find the current through the galvanometer.
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Give the direction of thermoelectric current (i) at the cold junction of copper-bismuth, (ii) at the hot junction of iron-copper and (iii) at the cold
(i) From copper to bismuth (ii) From copper to iron (iii) From lead to platinum.
2 Answers 1 views
In a wheatstone bridge, the resistance of the arms of the bridge are AB = `2Omega`, BC = `4Omega` ,AD = `1Omega` and DC = `3Omega`. The terminals of n
Correct Answer - 0.0016 A
2 Answers 1 views
A battery of 2V and internal resistance `2Omega` is used in wheatstone bridge. Find the current through the galvanometer in the unbalanced position of
Correct Answer - 0.011 A
2 Answers 1 views
The resistance of the four arms of a Wheatstone bridge are P=`10Omega` , Q = `100Omega`, R=`40Omega` and S `=10Omega`. What resistance in series or pa
Correct Answer - 390 `Omega` in series
2 Answers 1 views
Compare the heat developed in the four arms of a balanced. Wheatstone bridge. The resistance of the arms are ``10Omega ,100Omega,40Omega and 400Omega`
Correct Answer - 4:40:1:10 maximum in `100Omega` and minimum in `40Omega`
2 Answers 3 views
A current of 0.1 A enters a Wheatstone bridge consisting of three arms of `10Omega` each and one of `11Omega`. What is the current in galvanometer f i
Correct Answer - `(1)/(4520)A`
2 Answers 1 views
Four resistances of `15Omega,12Omega,4Omega and 10Omega` respectively are connected in cyclic order to form a wheatstone bridge. Is the network balanc
Correct Answer - bridge is not balanced, `10Omega`
2 Answers 1 views
Four coils resistances 3,6,9 and `30Omega` respectively are arranged to form a wheatstone bridge. Determine the value of the resistance with which the
Correct Answer - `45Omega`
2 Answers 1 views
P,Q,R and S are the resistances taken in the cyclic order in a wheatstone bridge network. P and Q are ratio coils, S is the unknown resistance and R i
Correct Answer - `19.07Omega,1.007:1`
2 Answers 1 views
A resistance of `2Omega` is connected across one gap of a metre-bridge(the length of the wire is 100 cm) and an unknown resistance, greater than `2Ome
Answer A) 3 ohm Soln-: 2/x=y/(100-x) 200-2x=xy ......1 After interchanging Y/x+20 = 2/(80-x) 80y-xy=2x+40 .......2 On solving equation 1 and 2 Y=3 ohm
2 Answers 1 views