Current Electricity

The value of current I in figure is

Which of the following relation is wrong?

In the circuit shown below the resistance of the galvanometer is In which of the following alternative are the currents arranged strictly in the decreasing order

A potentiometer wire of length and resistance is connected in series with a cell of with internal resistance and a resistance box including a resistance If potential difference between the ends of the wire is the value of is

An ammeter reads 0.90 A when connected in series with a silver voltmeter that deposits 2.60 g of silver in 40 min. By what percentage is the ammeter reading is correct? Atomic weight of silver = 108 and 1 F=96500 C?

The following four wires are made of the same material and are at the same temperature. Which one of them has the highest electrical resistance?

A battery of 24 cells, each of emf and internal resistance is to be connected in order to send the maximum current through a resistor. The correct arrangement of cells will be

Two different metals are joined end to end. One end is kept at constant temperature and the other end is heated to a very high temperature. The high depicting the thermo .m.f. is

In an experiment, a graph was plotted of the potential difference between the terminals of a cell against the circuit current by varying load rheostat. Internal conductance of the cell is given by

A metallic block has no potential difference applied across it, then the mean velocity of free electrons at absolute temperature is