ELECTRIC CURRENT AND DRIFT VELOCITY
Current Electricity

268415 An electron of mass m, moves around the nucleus in a circular orbit of radius ' r ' under the action of centripetal force ' F '. The equivalent electric current is

1 e2πFmr
2 eπFrm
3 e2πFmr
4 eπFmr
Current Electricity

268416 The current in a conductor varies with time ' t ' as I=3t+4t2. Where I in amp and t in sec. The electric charge flows through the section of the conductor between t=1 and t=3 s

1 1003C
2 1274C
3 1403C
4 1503C
Current Electricity

268417 A conductor has a non-uniform section as shown in the figure. A steady current is flowing through it. Then the drift speed of the electrons
( M-2012)

1 is constant throughout thewire
2 varies unpredictably
3 decreases fromP \& Q
4 increases fromP to Q
Current Electricity

268414 In a hydrogen tube it isobserved that through a given cross - section 3.13×1015 electrons per sec, moving from right to left and 3.12x 1015 protons per sec are moving from left to right. The electric current in the discharge tube and its direction is

1 1 mA towards left
2 1 mA towards right
3 1.5 mA towards right
4 2 mA towardsleft
Current Electricity

268415 An electron of mass m, moves around the nucleus in a circular orbit of radius ' r ' under the action of centripetal force ' F '. The equivalent electric current is

1 e2πFmr
2 eπFrm
3 e2πFmr
4 eπFmr
Current Electricity

268416 The current in a conductor varies with time ' t ' as I=3t+4t2. Where I in amp and t in sec. The electric charge flows through the section of the conductor between t=1 and t=3 s

1 1003C
2 1274C
3 1403C
4 1503C
Current Electricity

268417 A conductor has a non-uniform section as shown in the figure. A steady current is flowing through it. Then the drift speed of the electrons
( M-2012)

1 is constant throughout thewire
2 varies unpredictably
3 decreases fromP \& Q
4 increases fromP to Q
Current Electricity

268414 In a hydrogen tube it isobserved that through a given cross - section 3.13×1015 electrons per sec, moving from right to left and 3.12x 1015 protons per sec are moving from left to right. The electric current in the discharge tube and its direction is

1 1 mA towards left
2 1 mA towards right
3 1.5 mA towards right
4 2 mA towardsleft
Current Electricity

268415 An electron of mass m, moves around the nucleus in a circular orbit of radius ' r ' under the action of centripetal force ' F '. The equivalent electric current is

1 e2πFmr
2 eπFrm
3 e2πFmr
4 eπFmr
Current Electricity

268416 The current in a conductor varies with time ' t ' as I=3t+4t2. Where I in amp and t in sec. The electric charge flows through the section of the conductor between t=1 and t=3 s

1 1003C
2 1274C
3 1403C
4 1503C
Current Electricity

268417 A conductor has a non-uniform section as shown in the figure. A steady current is flowing through it. Then the drift speed of the electrons
( M-2012)

1 is constant throughout thewire
2 varies unpredictably
3 decreases fromP \& Q
4 increases fromP to Q
Current Electricity

268414 In a hydrogen tube it isobserved that through a given cross - section 3.13×1015 electrons per sec, moving from right to left and 3.12x 1015 protons per sec are moving from left to right. The electric current in the discharge tube and its direction is

1 1 mA towards left
2 1 mA towards right
3 1.5 mA towards right
4 2 mA towardsleft
Current Electricity

268415 An electron of mass m, moves around the nucleus in a circular orbit of radius ' r ' under the action of centripetal force ' F '. The equivalent electric current is

1 e2πFmr
2 eπFrm
3 e2πFmr
4 eπFmr
Current Electricity

268416 The current in a conductor varies with time ' t ' as I=3t+4t2. Where I in amp and t in sec. The electric charge flows through the section of the conductor between t=1 and t=3 s

1 1003C
2 1274C
3 1403C
4 1503C
Current Electricity

268417 A conductor has a non-uniform section as shown in the figure. A steady current is flowing through it. Then the drift speed of the electrons
( M-2012)

1 is constant throughout thewire
2 varies unpredictably
3 decreases fromP \& Q
4 increases fromP to Q