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ELECTRICITY
1. Charge on one electron is:
(A) 9.1 × 1019 C (B) 1.6 × 1019 C (C) +9.1 × 1019 C (D) +1.6 × 1019 C
2. The current flow in conductor is due to:
(A) free electrons (B) protons (C) ions (D) neutrons
3. A current of 1.0 ampere is flowing in a conductor. The number of electrons passing per second will be:
. (A) 6.25 (B) 6.25 × 10 18 (C) 6.25 × 1018 (D) 1
4. The amount of electric charge on one proton is:
(A) 1.0 × 1019 C (B) 6.25 × 10+19 C (C) 1.6 × 10+19 C (D) 1.6 × 1019 C
5. Silicon is a:
(A) conductor (B) insulator (C) semi-conductor (D) none of these
6. The unit of electric charge is:
(A) joule (B) coulomb (C) volt (D) ampere
7. The unit of electric current is:
(A) coulomb (B) joule (C) ampere (D) calorie
8. If ‘I’ is the current through a wire and ‘e’ is the charge of an electron, then the number of electrons in
‘t’ seconds will be given by:
(A) Ie/t (B)Ite (C)e/It (D) It/e
10. A flow of 107 electrons per second in a conducting wire constitutes a current of
(A) 1.6 × 1012 A (B) 1.6 × 1026 A (C) 1.6 × 1026 A (D) 1.6 × 1012 A
11. An electric charge on a body produces:
(A) a magnetic field only (B) an electric field only (C) both electric and magnetic field
(D) neither electric nor magnetic field
12. If a charged body attracts another body, the charge on the other body:
(A) must be negative (B) must be positive (C) must be zero (D) may be negative or positive
13. Find the charge pass through a conductor per second if current recorded to be 1 A:
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(A) 104 C (B) 103 C (C) 105 C (D) 106 C
14. How much energy is given to each coulomb of charge passing 10 V battery?
(A) 1 J (B) 10 J (C) 10 KWh (D) None of these
15. There is no flow of current between two charged bodies when connected because:
(A) they have the same quantity of charge (B) they have the same potential (C) they have the same
capacity (D) they have the same ratio of potential per unit charge
16. Electron volt is the unit of:
(A) energy (B) charge (C) potential difference (D) charge to mass
17. Calculate the potential difference between the two terminals of a battery if 100 J of work is required
to transfer 20 C of charge from one terminal of the battery to the other.

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ELECTRICITY 1. Charge on one electron is: (A) –9.1 × 10–19 C (B) –1.6 × 10–19 C (C) +9.1 × 10–19 C (D) +1.6 × 10–19 C (C) ions (D) neutrons 2. The current flow in conductor is due to: (A) free electrons (B) protons 3. A current of 1.0 ampere is flowing in a conductor. The number of electrons passing per second will be: . (A) 6.25 (B) 6.25 × 10 18 (C) 6.25 × 10–18 (D) 1 4. The amount of electric charge on one proton is: (A) 1.0 × 10–19 C (B) 6.25 × 10+19 C (C) 1.6 × 10+19 C (D) 1.6 × 10–19 C (B) insulator (C) semi-conductor (D) none of these 5. Silicon is a: (A) conductor 6. The unit of electric charge is: (A) joule (B) coulomb (C) volt (D) ampere (C) ampere (D) calorie 7. The unit of electric current is: (A) coulomb (B) joule 8. If ‘I’ is the current through a wire and ‘e’ is the charge of an electron, then the number of electrons in ‘t’ seconds will be given by: (A) Ie/t (B)Ite (C)e/It (D) It/e 10. A flow of 107 electrons per second in a conducting wire constitutes a current of (A) 1.6 × 10–12 A (B) 1.6 × 1026 A (C) 1.6 × 10–26 A (D) 1.6 × 1012 A 11. An electric charge on a body produces: (A) a magnetic field only (B) an electric field only (C) both electric and magnetic field (D) neither electric nor magnetic field 12. If a charged body attracts another body, the charge on the other body: (A) must be negative (B) must be positive (C) must be zero (D) may be negative or positive 13. Find the charge pass through a conductor per second if current recorded to be 1 A: (A) 10–4 C (B) 10–3 C (C) 10–5 C (D) 10–6 C 14. How much energy is given to each coulomb of charge passing 10 V battery? (A) 1 J (B) 10 J (C) 10 KWh (D) None of these 15. There is no flow of current between two charged bodies when connected because: (A) they have the same quantity of charge (B) they have the same potential (C) they have the same capacity (D) they have the same ratio of potential per unit charge 16. Electron volt is the unit of: (A) energy (B) charge (C) potential difference (D) charge to mass 17. Calculate the potential difference between the two terminals of a battery if 100 J of work is required to transfer 20 C of charge from one terminal of the battery to the other. Name: Description: ...
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