1. Which of the following statements is true?

A. A stationary charge produces an electric field

B. A charge moving with uniform speed produces a magnetic field C. An accelerated charge produces an electromagnetic field

D. All of these

3. Considering the statement of question 2 what will be the direction of magnetic field if an electronic if an electronic current is pointed into the paper?

A. Clock-wise

B. Anti-Clock wise

C. Can be both

D. Will have no magnetic field

4. Around a straight current carrying conductor the direction of magnetic field is:

A. Straight                           

B. circular

C. Both A & B                    

D. Non of these

6. Two current carrying conductors are placed side by side then:

A. They attract if current has same direction

B. They repel if current has opposite direction

C. They will not interact due to electric field but due to magnetic field

D. All of these

10.    For a current carrying solenoid the term “n” has unit as:

A. m ⁻¹                               

B. m ⁻²

C. m ⁻³                                 

D. No units

11. If for a current carrying solenoid the current is doubled and length is halved then the new magnetic field becomes:

A. 䍐 ’= 2B                                           

B. 䍐 ’= 4B

D. 䍐 ’= B

21. If a charged particle is passed through a region where both electric and magnetic fields are acting such that two forces may balance, such device is called:

A. Gold leaf electroscope

B. CRO

C. Velocity Selector

D. Tesla Coil

22. MRI uses a combination of:

A. Strong electric field and radio waves

B. Strong electric field and microwaves

C. Strong magnetic field and microwaves

D. Strong magnetic field and radio waves

24. An electric device which is used to measure electric current in a circuit is called:

A. Galvanometer B. Voltmeter

C. Ammeter

D. Thermometer

25. One weber is equal to:

A. N.A²/m

B. N.m²

C. N.A/m 

D. N.m/A

26. The e/m of electron is called:

A. Charge density       

B. Effective charge

C. Specific charge              

D. None of these

28. Which particle will have minimum frequency of rotation when projected with same velocity perpendicular to a magnetic field:

A.Electron                               

B. Li+

C. Proton                                 

D. He+

30. If electron is projected at 45⁰ in a magnetic field, it will move on:

A. Circular path      

B. Helical path

C. Straight line                                

D. Elliptical path

35. The sensitivity of galvanometer can be increased by:

A. Increasing    

B. Decreasing c

C. Decreasing N                  

D. Both A and B

36. The concave shaped poles and soft iron cylinder placed inside the coil of galvanometer makes magnetic field:

A. Radial         

B. Stronger

C. Both radial and stronger      

D. Variable

38. An ammeter reads up to 1 A, its internal resistance is 0.81 ohm. To increase the range to 10 A, the value of required shunt is:

A. 0.09 ohm 

B. 0.03 ohm

C. 0.3 ohm                        

D. 0.9 ohm

39. Which of the following is true?

A. Ammeter has low resistance and is connected in series in the circuit

B. Ammeter has low resistance and is connected in parallel in the circuit

C. Voltmeter has low resistance and is connected in parallel in the circuit

D. Both B & C

40. To increase the range of a voltmeter we need to connect a suitable.

A. High resistance in series

B. High resistance in parallel

C. Low resistance in series

D. Low resistance in parallel

41. A voltmeter has resistance of 2000 ohm and it can measure up to 2V. If we want to increase its range to 10V, then required resistance in series will be.

A. 2000 Ὠ

B. 4000 Ὠ

C. 600 Ὠ                          

D. 8000 Ὠ

42. To measure the resistance of a device, which of the following mode of connecting can be used?

A. Ammeter in series, voltmeter in parallel

B. Voltmeter in series, ammeter in parallel

C. Both ammeter and voltmeter in series

D. Both ammeter and voltmeter in parallel

43. If shunt resistance is increased then range of ammeter ____ and if series resistance is increased then range of voltmeter ____.

A. Decreases, increases                                    

B. Decreases, decreases

C. Increases, decreases                            

D. Increases, increases

44. What shunt resistance must be connected across a galvanometer of 50Ὠ resistance which gives full scale deflection with 2 mA current, so as to convert it into an ammeter of range 10.0 A?

A. 0.1 Ὠ           

B. 0.5 Ὠ

C. 0.01 Ὠ                                            

D. 0.7 Ὠ

45. Which electrical measuring instrument has the lowest resistance?

A. Ammeter                            

B. Voltmeter

C. Galvanometer                    

D. Both A and C

47. In Ohmmeter circuit, the zero of Galvanometer scale is marked as___ resistance.

A. Zero       

B. 10 kὨ

C. 100 Ὠ                                

 D. Infinite

49. DMM shows the values with:

A. Decimal                           

B. Polarity

C. Units                                

D. All of these

If a voltage of 15V is to be measured, then what should be the resistance between X and Y to make suitable voltmeter from above circuit.

A. 10.5kW

B. 20.5 kW

 C. 5.5 kW

  D.None of these

50. Referring to circuit in Q # 49, if a voltage of 30 V is to be measured, then what should be the resistance between X and Y to make a suitable voltmeter from that circuit:

A. 10.5 kὨ                          

B. 20.5 kὨ

C. 30.5 kὨ                           

D. None of these