Part 1 1. Which of the following is false about electric field for dipole kept at origin along +x axis a. Electric field at (5,0) is along +x axis b. Electric field at (-2,0) is along +x axis c. Electric field at a point between the dipole is along +x axis d. None of the above 2. An electric field 7 N/C exists at an angle 45° with +x axis. Find the potential difference between (0,0) and (4,0) a. zero b. 20V 3. Assertion: Like charges always repel each other c. 28V d. 7V Reason: the above statement is true for all types of like charges, it is the fundamental law of nature a. Both A & R are true and R is the correct explanation of A b. Both A & R are true and R is not the correct explanation of A c. A is true, R is false d. A and R, both are false 4. Two charges 4C and -1C are kept at origin and (5,0). Find the point of zero electric field. 5. Draw three equipotential surface of voltage 6V, 5V and 4V for a positive point charge. Part 2 6. For which of the following dependence of drift velocity electric field E is Ohm's law obeyed. (a) va < VE (b) va x E (c) Vd α E² (d) Vd constant 7. The current density (number of free electrons per m³) in metallic conductor is of the order of (a) 1022 (b) 1024 (c) 1026 (d) 1028

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Part 1
1. Which of the following is false about electric field for dipole kept at origin along
+x axis
a. Electric field at (5,0) is along +x axis
b. Electric field at (-2,0) is along +x axis
c. Electric field at a point between the dipole is along +x axis
d. None of the above
2. An electric field 7 N/C exists at an angle 45° with +x axis. Find the potential
difference between (0,0) and (4,0)
a. zero
b. 20V
3. Assertion: Like charges always repel each other
c. 28V
d. 7V
Reason: the above statement is true for all types of like charges, it is the
fundamental law of nature
a. Both A & R are true and R is the correct explanation of A
b. Both A & R are true and R is not the correct explanation of A
c. A is true, R is false
d. A and R, both are false
4. Two charges 4C and -1C are kept at origin and (5,0). Find the point of zero
electric field.
5. Draw three equipotential surface of voltage 6V, 5V and 4V for a positive point
charge.
Part 2
6. For which of the following dependence of drift velocity electric field E is Ohm's
law obeyed.
(a) va < VE
(b) va x E
(c) Vd α E²
(d) Vd
constant
7. The current density (number of free electrons per m³) in metallic
conductor is of the order of
(a) 1022
(b) 1024
(c) 1026
(d) 1028
Transcribed Image Text:Part 1 1. Which of the following is false about electric field for dipole kept at origin along +x axis a. Electric field at (5,0) is along +x axis b. Electric field at (-2,0) is along +x axis c. Electric field at a point between the dipole is along +x axis d. None of the above 2. An electric field 7 N/C exists at an angle 45° with +x axis. Find the potential difference between (0,0) and (4,0) a. zero b. 20V 3. Assertion: Like charges always repel each other c. 28V d. 7V Reason: the above statement is true for all types of like charges, it is the fundamental law of nature a. Both A & R are true and R is the correct explanation of A b. Both A & R are true and R is not the correct explanation of A c. A is true, R is false d. A and R, both are false 4. Two charges 4C and -1C are kept at origin and (5,0). Find the point of zero electric field. 5. Draw three equipotential surface of voltage 6V, 5V and 4V for a positive point charge. Part 2 6. For which of the following dependence of drift velocity electric field E is Ohm's law obeyed. (a) va < VE (b) va x E (c) Vd α E² (d) Vd constant 7. The current density (number of free electrons per m³) in metallic conductor is of the order of (a) 1022 (b) 1024 (c) 1026 (d) 1028
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