CBSE Class 12   CBSE Class 12 Physics

Why are the connections between the resistors in a meter bridge made of thick copper strips? (2)
Determine the current in each branch of the following network (2)
AB is a potentiometer wire as shown in figure (2)
In the meter bridge experiment, the balance point (2)
Use Kirchhoff s rules to determine the value of the current $I_{1 }$ flowing in the circuit shown in the figure (2)
Six lead-acid type of secondary cells each of emf 2 V (2)
Write any two factors on which internal resistance of a cell depends (2)
First a set of n equal resistors of R (2)
When is more power delivered to a light bulb (2)
Power P is to be delivered to a device via transmission cables (2)
Write two characteristics of manganin which make it suitable for making standard resistances (1)
Two conductors are made of the same material (2)
A conductor of length l (2)
What conclusion can you draw (2)
A galvanometer coil has a resistance of 12 Q (2)
A rectangular coil of area 2 x ${{10}^{4}}$ ${{m}^{2}}$ and 40 turns (2)
What is the magnitude of magnetic force per unit length (2)
Find the force exerted at point 02 because of the wire along the X-axis (2)
Using Ampere’s circuital law, derive the expression (2)
A proton is travelling with horizontal velocity (2)
A uniform magnetic field Bis set up along the positive X-axis (2)
A circular coil of 20 turns and radius 10 cm (2)
Answer the following questions given (2)
Suggest some appropriate design particulars of a solenoid (2)
Explain how Biot-Savart’s law (2)
A point charge is moving with a constant velocity perpendicular (2)
A charge q moving along the X-axis with a velocity v (2)
A particle of charge q and mass m is moving with velocity v (2)
A solenoid of length 1.0 m and 3.0 cm diameter (2)
Considering the case of a parallel plate (2)