3 1 25 V cm What is the emf of the second cell 2 1 5 Voley 4

Last updated: 6/5/2023

3 1 25 V cm What is the emf of the second cell 2 1 5 Voley 4 2 25 V PO 14 A wire carries a current of 2 0A What is the charge that has flowed through its cross section in 1 0 sec 14 How many electrons does this corresponds to pg 9 1 0 2 C 1 25 10 9 3 2C 1 25 x 10 19 2 2C 1 25 x 10 9 4 0 2C 1 5 x 101 C 15 The temperature coefficient of a wire is 0 00125 C At 300K its resistance is one ohm The resistance of the wire will be 2ohm at 1 1154 K 2 1100 K 3 1400 K 4 1127 K 16 Two wires A and B of the same material having radii in the ratio 1 2 and carry currents in the ratio 4 1 0 The ratio of drift speed of electrons in A and B is pg 1 1 16 1 pg 9 confusing 2 1 16 3 1 4 24 4 4 1 7 When a current I is set up in a wire of radius r the drift velocity is Vd If the same current is set up through a wire of radius 2r the drift velocity will be 1 4 Vd 2 2Vd 3 Vd 2 2 OS 4 Vd 4 8 Five equal resistances each of resistance R are connected as shown in the figure A battery of V volt is The current flowing in AFCEB will be