Current Electricity questions
395 published questions with worked solutions.
- Potential difference across terminals of a particular battery is measured in two way. First with potentiometer which indicates...
- Kirchhoff's laws are used to calculate currents and potential differences in
- According to the Kirchhoff's laws in an electric circuit, the algebraic sum of current at any junction is
- According to Kirchhoff's law, the algebraic sum of the products of current and resistance as well as e. m. f.s in a closed loop is
- In a closed circuit, the vector sum of total e. m. f.s is equal to the sum of the
- What determines the conventional direction of the product of current and resistance while applying the Kirchhoff's laws?
- A 50 V battery is connected across a 10 resistor and a current of 4.5 A flow. The internal resistance of the battery is
- Kirchhoff's current law is the law of conservation of
- Which of the following instruments is generally used with a galvanometer to show null reading?
- Slide wire bridge does not operate on the same principle as the
- In a potentiometer experiment, when three cells A, B and C are connected in series, the balancing length is found to be 740 cm....
- A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10^ -7...
- When two cells of e. m. f. 1.5 V and 1.1 V connected in series are balanced on a potentiometer, the balancing length is 260 cm....
- An accumulator of 5 volt is connected through a resistance of 40 , to a potentiometer wire 10 m long and of resistance 10 , . For...
- The e.m.f. E of the battery is balanced by p.d. across 75 cm of a potentiometer wire. For a standard cell of e. m. f. 1.02 V, the...
- A battery of e. m. f. 2 V and internal resistance 2 , is connected to an external resistance 8 , . If the length of the conductor...
- A cell of e.m.f 2 V and negligible internal resistance is connected in series with a potentiometer wire of length 100 cm. The...
- An electron in potentiometer wire experiences a force 2.4 10^ -19 N. The length of potentiometer wire is 6 m. The e.m.f. of the...
- A potentiometer consists of a wire of length 4 m and resistance 10 , . It is connected to a cell of e.m.f. 2 V. The potential...
- In a potentiometer experiment of a cell of e.m.f. 1.25 V given balancing length of 30 cm. If the cell is replaced by another...
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration