Current Electricity

In the circuit, what is the potential difference across A and B ?

Metre bridge is used to

The e.m.f. of two cells can be compared by

Kirchhoff's voltage law and current law are based (respectively) on the conservation of

Kirchhoff's second law is based on the law of conservation of

Consider the following two statements: (A) Kirchhoff's junction law follows from the conservation of charge.

(B) Kirchhoff's loop law follows from the conservation of energy.

Which of the following is correct?

A charged particle having drift velocity of $7.5\times{10}^{-4} ms^{-1}$ in an electric field of $3\times{10}^{-10} Vm^{-1}$, has a mobility in $m^{2}V^{-1}s^{-1}$ of

In a Wheatstone bridge, when the potentials at points B and D are the same, then the current through the galvanometer

In the following electrical network, the value of I is

One kilowatt hour is equal to

The total power dissipated in watts in the circuit shown here is

Which of the following graphs represents the variation of resistivity $(\rho)$ with temperature $(T)$ for copper?

A potentiometer wire is 4 m long and potential difference of 3 V is maintained between the ends. The e.m.f. of the cell which balances against a length of 100 cm of the poteniometer wire is

If the number of turns in the coil of a moving coil galvanometer decreases, the resistance of the galvanometer,

In the circuit, current flowing through the circuit is