Electric Curren...

According to Kirchhoff’s Loop Rule

The Wheatstone bridge is balanced for four resistors R1,R2,R3 and R4 with a cell of emf 1.46 V. The cell is now replaced by another cell of emf 1.08 V. To obtain the balance again

Resistance of a conductor is

Two cells of emf 1.25V , 0.75V and each of internal resistance 1Ω are connected in parallel. The effective emf will be

Flow of charges in direction of electrons is called 

In the measurement of resistance by a metre bridge, the current is necessarily reversed through the bridge wire to eliminate

 If the length of the filament of a heater is reduced by 10% the power of the heater will

Resistance of a conductor is

According to Ohm's law

Potentiometer is

The unit of current is

A Wheatstone bridge ABCD is balanced with a galvanometer between the points B and D. At balance the resistance between the points B and D is :

The instrument for the accurate measurement of the e.m.f of a cell is

Electromotive force is

Drift is the random motion of the charged particles within a conductor,

Unit of Resistivity is

Potentiometer measures the potential difference more accurately than a voltmeter, because

Meter Bridge is based on the principle of

A piece of copper and another of germanium are cooled from room temperature to 80K. The resistance

Unit of power is

In a potentiometer experiment, for measuring internal resistance of a cell, the balance point has been obtained on the fourth wire. The balance point can be shifted to fifth wire by

Meter Bridge is used to

According to Kirchhoff’s Junction Rule

Ammeter is always used

The sensitivity of the potentiometer can be increased by:

Direction of the conventional current

Kirchhoff’s second law is a consequence of

A battery is connected with a potentiometer wire. The internal resistance of the battery is negligible. If the length of the potentiometer wire of the same material and radius is doubled then

In a meter bridge experiment a balance point is obtained at a distance of 60 cm from the left end when unknown resistance R is in a left gap and 8 ohms resistor is connected in the right gap. When the position of R and 8 ohm resistor is interchanged the balance point will be at distance of

A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 with a Lech lanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance will