Physics questions
20027 published questions with worked solutions.
- 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 slide wire bridge is also called a metrebridge Statement 2: It is because, the length of wire in a slide wire...
- Statement 1: In a metrebridge, length of the wire is 1 metre Statement 2: Greater the length of wire, better is the accuracy
- Statement 1: In a metre bridge experiment, null point for an unknown resistance is measured. Now the unknown resistance is placed...
- 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...
- Gravitational force is
- Universal law of gravitation is derived from
- Newton's law of gravitation is universal because