EASY
12th Nagaland Board
IMPORTANT
Earn 100

Draw a circuit diagram of a Wheatstone bridge. Using Kirchhoff’s rules, obtain the balance condition for the network.

Important Questions on Current Electricity
HARD
12th Nagaland Board
IMPORTANT
In the arrangement of cells and resistors shown in the figure, calculate the current in each resistor.

EASY
12th Nagaland Board
IMPORTANT
A heater coil is rated . It is cut into two identical parts. Both parts are connected together in parallel to the same source of . Calculate the energy liberated per second in the new combination.

EASY
12th Nagaland Board
IMPORTANT
A silver wire has a resistance of at . Determine the temperature coefficient of resistivity of silver.

EASY
12th Nagaland Board
IMPORTANT
The storage battery of a car has an emf of . If the internal resistance of the battery is , what is the maximum current that can be drawn from the battery?

EASY
12th Nagaland Board
IMPORTANT
Derive the expression for equivalent emf () for the cells in series combination.

EASY
12th Nagaland Board
IMPORTANT
In a meter bridge, the balance point is found to be at from . When the resistor is of .
Determine the resistance of .

EASY
12th Nagaland Board
IMPORTANT
In a meter bridge, the balance point is found to be at from . When the resistor is of .
Determine balance point of the bridge above, if and are interchanged.

EASY
12th Nagaland Board
IMPORTANT
In a meter bridge, the balance point is found to be at from . When the resistor is of .
What happens if the galvanometer and cell are interchanged at the balance point of the bridge?
