Current Electricity questions
395 published questions with worked solutions.
- A wire of length 100 cm is connected to a cell of e.m.f. 2 V and negligible internal resistance. The resistance of the wire is 3...
- An ammeter and a voltmeter are connected in series to a cell. Their readings are X and Y respectively. If a resistance is now...
- A cell has an emf of 3 volt and internal resistance 2 . It is connected to an ammeter having resistance 2 and to an external...
- A certain wire is made up into two squares with a common side of length 5 cm. A current enters the rectangular network at one of...
- Statement 1: A wire of uniform cross-section and uniform resitivity is connected across an ideal cell. Now the length of wire is...
- Wheatstone's bridge is more sensitive when all the four resistances are in
- On sending the current in the Wheatstone's network, the network is said to be balanced, if
- Four resistors P, Q, R and S having resistances 2 , 2 , 2 and 3 respectively, are arranged to form a Wheatstone's bridge. The...
- In Wheatstones network P = 2 , Q = 2 , R = 2 and S = 3 . The resistance with which S is to be shunted in order that the bridge...
- In a Wheatstone's metrebridge, the null point is obtained at the middle point of the wire. If in one gap the resistance is 10 ,...
- In the measurement of a resistance by the Wheatstone bridge, the known and the unknown resistance are interchanged to eliminate
- A uniform wire of 16 is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance...
- In Wheatstone bridge, the resistances in four arms are 10 , 10 , 10 and 20 . To make the bridge balance, resistance connected...
- In Wheatstone's bridge, three resistors P, Q, R are connected in three in order and 4^ th arm S is formed by two resistors S_1...
- Four resistances arranged to form a Wheatstone network are 8 , 12 , 6 and 27 . The resistance should be shunted across 27...
- The current sensitivity of M.C.G. of resistance 200 is 1 div/mA. Its voltage sensitivity is
- Two galvanometer G_1 and G_2 require current of 10 mA and 7 mA respectively to produce the same deflection of 30 division then:
- SI unit of current sensitivity of M.C.G. is given by:
- A resistance of 2 is connected in parallel to a galvanometer of resistance 48 . The fraction of the total current passing through...
- A galvanometer of resistance 36 is shunted by a resistance of 4 . The percentage of the total current passing through the...
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