Q1PhysicsUnit 12: Current Electricity
Between any two points in a circuit, the sum of all is the same through
any pathway.
Physics · JEE
Important Questions: Kirchhoff's laws and their applications, Wheatstone bridge, Metre Bridge for JEE
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Syllabus context
Part of Current Electricity in JEE Main Physics.
- Electric current: drift velocity, mobility and their relation with electric current
- Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors
- Electrical energy and power, electrical resistivity and conductivity
- Series and parallel combinations of resistors, temperature dependence of resistance
- Internal resistance, potential difference and emf of a cell, a combination of cells in series and parallel
- Kirchhoff's laws and their applications, Wheatstone bridge, Metre Bridge
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Q2PhysicsUnit 12: Current Electricity
In the given circuit diagram the ratio of
potential difference across 3 ohm and 4
ohm resistance is The unknown
resistance is:-
Q3PhysicsUnit 12: Current Electricity
In the ladder network shown, current
through the resistor is The
input voltage ' is equal to
Q4PhysicsUnit 12: Current Electricity
During an experiment with a metre bridge, the galvanometer shows a null point when the jockey is pressed at
using a standard resistance of
as shown in the figure. The least count of the scale used in the metre
bridge is 1 mm. The unknown
resistance is
Q5PhysicsUnit 12: Current Electricity
Kirchhoff's law of meshes is in
accordance with law of conservation of:
Q6PhysicsUnit 12: Current Electricity
Assertion
Total current entering a circuit is equal
to leaving the circuit by Kirchhoff's law.
Reason
It is based on conservation of energy.
Q7PhysicsUnit 12: Current Electricity
Assertion
Kirchhoff's junction rule can be applied to a junction of several lines or a point in a line.
Reason
When steady current is flowing, there is no accumulation of charges at any junction or at any point in a line.
Q8PhysicsUnit 12: Current Electricity
A Wheatstone bridge consisting of four of resistances is most
sensitive when :
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Popular questions in Kirchhoff's laws and their applications, Wheatstone bridge, Metre Bridge
- Assertion Total current entering a circuit is equal to leaving the circuit by Kirchhoff's law. Reason It is based on con…
- A resistance of \( 2 \Omega \) is connected across one gap of a metrebridge ( the length of the wire is \( 100 \mathrm{c…
- Four conductors of resistance 4,3,9 and 6 ohm are connected in \( A B, B C, C D \) and DA arms of a Wheatstone bridge. T…
- Assertion (A) : In a metrebridge ; Copper wire is connected in the left gap and silicon is connected in the right gap. W…
- During an experiment with a metre bridge, the galvanometer shows a null point when the jockey is pressed at \( 40.0 \mat…
- The point in a Meter bridge is at \( 35.6 \mathrm{cm} . \) If the resistances in the gaps are interchanged,the new balan…
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