1.In an electrolyte 3.2 x 10 ¹⁸ bivalent positive ions  drift to the right per second while 3.6 x 10 ¹⁸  monovalent negative ions drift to the left per second. Then the current is

2. Resistors of 1, 2, 3 ohm are connected in the form of a triangle. If a 1.5 volt cell of negligible internal resistance is connected across 3 ohm resistor, the current flowing through this resistance will be

3. An infinite ladder network is arranged with resistances R and 2 R as shown.  The effective resistance between terminals A and B is

4. If each of the resistance of the network shown in the figure is R, the equivalent resistance between A and B is

5.A 50V battery is connected across a 10 ohm resistor. The current is 4.5 amperes. The internal resistance of the battery is

6.The number of dry cells, each of e.m.f. 1.5 volt and internal resistance 0.5 ohm that must be joined in series with a resistance of 20 ohm so as to send a current of 0.6 ampere through the circuit is 

7.The resistance of 1 A ammeter is 0.018 ꭥ. To convert it into 10 A ammeter, the shunt resistance required will be

8. 100 mA current gives a full scale deflection in a galvanometer of 2 ꭥ resistance. The resistance connected with the galvanometer to convert it into a voltmeter to measure 5 V is     

9. Two cells when connected in series are balanced on 8m on a potentiometer. If the cells are connected with polarities of one of the cell is reversed, they balance on 2m. The ratio of e.m.f.'s of the two cells is

10.A Daniel cell is balanced on 125 cm length of a potentiometer wire. Now the cell is short-circuited by a resistance 2 ohm and the balance is obtained at 100 cm. The internal resistance of the Daniel cell is