Physics Class 12th Test Series Practice Paper 2023
LONG ANSWER TYPE QUESTIONS
Q1: State & proof Kirchhoff law
OR
Give the principal of potentiometer . Find the internal resistance of a cell using it.
Q2: what is potentiometer . Give its principal and hence explain it with circuit diagram
OR
How resistance varies with temperature . Explain?
Q3: Define drift velocity . Find an expression for it.
OR
Compare the electromotive force of two cells using potentiometer
SHORT ANSWER TYPE QUESTIONS
Q1: what is the relationship between current and drift velocity.
Q2: Deduce ohm's law from drift velocity.
Q3: Find the relationship between current density & electric field.
Q4: Write a short note on cells in series or cells in parallel.
Q5: Conducting wires X and Y of same diameter across a battery. If the
number density of electro in X is twice that in Y, find the ratio of drift
of electrons in the two wires.
Q6: Define the terms Mobility of charge charge carriers in a conductor. write
its S.I. unit.
Q7: Battery of EMF 10V and internal resistance 3 ohm's is connected to a resistor.
If the current in the circuit is 0.5A, What is the resistance of the resistor?
What is the terminal voltage of the battery when the circuit is closed?
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