Current Electricity questions
395 published questions with worked solutions.
- Two wires of the same metal have same length, but their cross-sections are in the ratio 3 : 1. They are joined in series. The...
- A wire 1m long has a resistance of 1 , . if it is uniformly stretched, so that its length increases by 25 % then its resistance...
- The Resistance of conductor increases with temperature due to
- Length of conductor is doubled, its conductance will be :
- Length of conductor is double and its radius is halved its resistance is :
- Ohm’s Law deals with the relation between potential difference and :
- The algebraic sum of currents at junction point in any electric circuit is equal to
- The mathematical equation of Kirchhoff’s current law is
- Kirchhoff’s first law, deals with the conservation of
- Kirchhoff’s second law is based on the law of conservation of
- Kirchhoff’s laws are related to the law of conservation of
- Kirchhoff’s law are used to calculate the current in
- Sign conventions used to apply Kirchhoff’s current law are
- Resistance of 1 , , 2 , and 3 , are connected in the form of a triangle. If a 1.5 V cell of negligible internal resistance is...
- A battery of 6 V and internal resistance 2 , sends a current of 1 A through a load. If two such batteries are connected in series...
- A cell supplies of 1 A through two resistors of 5 , each when in series and a current of 2.6 A through the same resistors but in...
- Kirchhoff’s first law is applicable to only :
- Kirchhoff’s second law is applicable to :
- Wheatstone’s bridge is an arrangement used for measuring
- On sending the current in the bridge, the bridge is said to be balanced, if
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