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6. A uniform electric field 10 N/C exists in vertically downward direction, the increase in the electric potential as one goes through a height of 50 cm is 1 b) a) 20J c) 5J d) J 20

6. A uniform electric field 10 N/C exists in vertically downward direction, the increase in the electric potential as one goes through a height of 50 cm is 1 b) a) 20J c) 5J d) J 20

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3. If a charge is moved against the coulomb force of an electric field a) work is done by electric field c) the strength of field is decreased b) energy is used from some outside source d) energy of system is decreased In a hydrogen atom the electron and a proton are bound together at a separation of about 0.53A°. The potential energy of electron proton system is a) – 54.4ev b) -27.2 ev c) -13.6 ev d) zero 5. Two identical charges are placed at the two corners of an equilateral triangle. The P.E of system is 'U' workdone in bringing an identical charge from infinity to the third vertex is a) U b) 2U c) 3U d) 4U A uniform electric field 10 N/C exists in vertically downward direction, the increase in the electric potential as one goes through a height of 50 cm is 6. a) 20J b) J c) 5J d) J 20 Statement A : Potential is a scalar quantity. Statement B: Gradient of potential is a vector quantity 7. b) Both A and B are false d) A is false and B is true a) Both A and B are true c) A is true and B is false Assertion (A) : Electric dipole consists of equal and disimilar charges separated by some distance Reason (R) : Electric dipole moment is a vector quantity a) Both A and R are correct and R is correct explanation of A b) Both A and R are correct but R is not correct explanation of A c) A is correct, R is wrong 8. d) A is wrong, R is correct 9. Two charged particles having equal charges of 2 x 10° C each are brought from infinity to within a separation of 10cm. The increase in P.E. is [ ] a) 18J b) 27J c) 36J d) 45J 1:1
Transcribed Image Text:3. If a charge is moved against the coulomb force of an electric field a) work is done by electric field c) the strength of field is decreased b) energy is used from some outside source d) energy of system is decreased In a hydrogen atom the electron and a proton are bound together at a separation of about 0.53A°. The potential energy of electron proton system is a) – 54.4ev b) -27.2 ev c) -13.6 ev d) zero 5. Two identical charges are placed at the two corners of an equilateral triangle. The P.E of system is 'U' workdone in bringing an identical charge from infinity to the third vertex is a) U b) 2U c) 3U d) 4U A uniform electric field 10 N/C exists in vertically downward direction, the increase in the electric potential as one goes through a height of 50 cm is 6. a) 20J b) J c) 5J d) J 20 Statement A : Potential is a scalar quantity. Statement B: Gradient of potential is a vector quantity 7. b) Both A and B are false d) A is false and B is true a) Both A and B are true c) A is true and B is false Assertion (A) : Electric dipole consists of equal and disimilar charges separated by some distance Reason (R) : Electric dipole moment is a vector quantity a) Both A and R are correct and R is correct explanation of A b) Both A and R are correct but R is not correct explanation of A c) A is correct, R is wrong 8. d) A is wrong, R is correct 9. Two charged particles having equal charges of 2 x 10° C each are brought from infinity to within a separation of 10cm. The increase in P.E. is [ ] a) 18J b) 27J c) 36J d) 45J 1:1
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