Tenth Class

Bit Bank

Physical Science

11. ELECTRIC CURRENT Objective Type Questions 1. A uniform wire of resistance 50Ω is cut into five equal parts. These parts are now connected in parallel, then the equivalent resistance of combinations is? [ A ] A) 2 Ω B) 12 Ω C).250 Ω D) 6250 Ω 2. The obstruction of the flow of electrons is called? A) Current B) Resistance C) Potential difference

D) Voltage

[ B

]

3. If two or more resistors connected in parallel, then ____ is same in them. A) Heat B) Current C) Resistance

[ D ] D) Potential difference

4. Ohm’s law was introduced by German Physicist,___________ A) Mohan Babu B) Chandra Babu C)Mahesh Babu

[ D ] D) George Simon Ohm

5. A uniform wire of resistance 100 Ω is cut into 5 equal parts. These parts are now connected in parallel. Then the equivalent resistance of the combination is ___________ [ A ] A) 4 Ω B) 20 Ω C) 50 Ω D) 500 Ω 6. Electricity conducts freely in? A) Conductor B) Insulator

C) Semiconductor

7. 1Joule/ Coulomb is same as__________ A) Watt B) 1 volt

C) 1 ampere

8. Kilowatt hour is the unit of? A) Potential difference C) Electrical energy

B) Energy D) Electrical resistance

[ A ] D) None of these [

B

]

D) 1 Ohm [ C ]

9. A change is moved from a point A to a point B. The work done to move unit charge during this process is called_______________ [ C ] A). Potential at A B). Potential at B C). Potential difference between A and B D). Current from A to B 10. If two or more resistors are connected in series, then ____ flows through them is same? [ B A) Potential difference B) Current C) Resistance D) Heat 11. 1coulomb/sec is the same as? A). 1 watt B). 1volt

[ C).1 ampere

]

B ]

D). 1 ohm

12. Consider following statement. [ A ] A: In series connection, the same current flows through each element B: In parallel connection, the same potential difference gets applied across each element A) Both A and B are correct B) A is correct but B is wrong C) A is wrong but B is correct D) Both A and B are wrong 13. A charge is moved from point A to point B. the work done by a chemical force is called-[ A) Potential at A B) EMF C) Potential difference between A and B D) Current from A to B 14. The current in the wire depends on _____________ A) Only on the potential difference applied B) Only on the resistance of the wire C) On both of them D) None of them

B ]

[ C ]

15. Consider the following statements. [ A ] A: In series connection the same current flows through each elements B: In parallel connection the same potential difference gets applied across each element A) Both A & B are correct B) A is correct but B is wrong C) A is wrong but B is correct D) both A and B are wrong Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.

9440234404

33

Tenth Class

Bit Bank

Physical Science

16. The electric potential of the earth is ______________ A) –ve B) +ve C) 0

D) ∞ infinite

17. Potential difference is also called ___________ A) Voltage B) Current

C) Both A and B

[ A ] D) None of these

C) 1 Ampere

[ D ] D) 1 Joule/1 Coulomb

18. 1 Volt = ______________ A) 1 Joule/Kelvin B) 1 Joule/ Kg

[ D ]

19. The device used to measure the current in the circuit is _________ A) Voltmeter B) Barometer C) Calorimeter

[

D ]

D) Ammeter

20. The obstruction of motion of electrons in a conductor called ______________ [ B A) Voltmeter B) Resistor C) Resistance D) Ammeter

]

21. The bulb filament made up of _____________ A) Copper B) Tungsten

]

22. Electric current, I = KLKMN&$M MOP&QK A) N$RK $%NK&SPL

____________ KLKMN&$M MOP&QK B) TULNPQK

23. 1 Ampere = ______________ A) 1 Coloumb/1 Second C) 1 Coloumb/1 Ampere

[ B C) Tin

C)

D) Titanium

KLKMN&$M MOP&QK VRWK&K

[

KLKMN&$M MOP&QK

D)

A ]

KRX

[ A ] B) 1 Coloumb/1 Joule D) 1 Coloumb/1 Calorie

24. The number of charges present in the conductor in a unit volume is called _________ [ D ] A) Electric charge B) Coloumb C) Drift velocity D) Charge density 25. The SI unit of electric current is _____________ A) Volt B) Coloumb

C) Ampere

]

[ A

]

D) Ohm

26. The power delivered by battery of emf, 10V is 10W. then the current delivered by the battery is _____________ A) 1A B) 2A C) 3A D) 4A 27. Kilo Watt Hour is the unit of ______________ A) Electrical power B) Electrical energy

[ A

C) Potential difference

[ B ] D) Electric current

28. The device which converts the chemical energy into electrical energy is _________ [ C A) Generator B) Electrical bulb C) Battery D) Electric fan

]

29. Battery has a chemical is called ______________ A) Electrode B) Iron plate

[ D

]

[ D

]

[ A

]

32. The material which transfers energy from battery (source) to the bulb is called a _____ [ A A) Conductor B) Insulator C) Semiconductor D) All

]

33. The material which can’t transfer energy from battery(source) to the bulb is called a___[ B A) Conductor B) Insulator C) Semiconductor D) All

]

34. The arrangement of the positive ions in a conductor is called ________ A) Conductor B) Insulator C) Semiconductor D) Lattice

]

C) Graphite

D) Electrolyte

30. The magnitude of electric charge ‘e’ is ____________ A) 1.602 x 10-16 C. B) 1.602 x 10-17 C. C) 1.602 x 10-18C.

D) 1.602 x 10-19 C.

31. The device which converts chemical energy into electrical is? A) Battery B) Motor C) Generator

D) Cooker

Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.

[ D

9440234404

34

Tenth Class

Bit Bank

Physical Science

35. The ordered motion of electrons in a conductor is called ________ [ A A) Electric current B) Electric power C) EMF D) Potential difference

]

36. S.I. unit of potential difference is______________ A) Volt B) Ampere C) Watt

[ A

]

[ B

]

[ C

]

[ D

]

41. The device which converts electrical energy into mechanical energy is? A) Battery B) Motor C) Generator D) Cooker

[ B

]

42. In the battery chemical energy is converted in to __________ Energy. A) Mechanical B) Electrical C) Magnetic D) Heat

[ B

]

43. The material which offers resistance to motion of electrons is called ____________ A) Insulator B) Conductor C) Resistor D) Semi Conductor

[ C ]

44. The S.I unit of Specific resistance (or) resistivity is _____________ A) ohm/metre B) ohm-metre C) ohm D) Ohm-Metre

[ B

45. Specific resistance depends upon _______________ A) Temperature B) Nature of Material C) Both A and B

[ C ]

37. S.I. unit of current is ______________ A) Volt B) Ampere

C) Watt

D) Ohm

D) Ohm

39. S.I unit of electric energy ______________ A) Volt B) Ampere

C) Watt

D) Ohm

40. S.I unit of resistance is ________________ A) Volt B) Ampere

C) Watt

D) Ohm

]

D) Length of Material

46. Semi-conductors are used to make the following devices. A) Diodes B) Transistors C) Integrated Circuits D) All of These

[ D ]

47. The obstruction to the flow of current is called______________ A) Current B) Voltage C) Resistance 48. The S.I unit of power ______________ A) Volt B) Ampere C) Watt

[ C ]

D) KW

49. A thick wire has ______________ resistance than a wire. A) More B) Less C) Equal

D) None

50. The reciprocal of resistivity is called as _________________ A) Conductivity B) Resistance C) Current

D) Voltage

D) None [ C ]

[ B

]

[ A ]

Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.

9440234404

35