CURRENT ELECTRICITY PART 4

31. Two resisters are said to be connected in series when

a. same current passes in turn through both 

b.Both  the same value of current 

c.Total current equals the sum of branch currents

d.Sum of  IR drops equals the applied EMF

32. Which of the following  statements is true both for a series and parallel D.C circuit 

a.Elements have individual currents

b. Currents are additive

c. Voltage are additive

d. Power are additive

33. Which of the following material has a negative temperature coefficient of resistance 

a. Copper 

b. aluminium 

c. carbon

d. brass

34.Ohm’s law is not applicable to 

a.Vaccum tubes 

b.carbon 

c. High Voltage circuits

d.Current with low current densities

35. Which is the best conductor

of electricity

a. Iron

b. Silver 

c.Copper

d.Carbon

36. For which of the following Ampere Second could be the unit of

a reluctance

b. charge 

c.Power 

d.Energy

37. All of the following are equivalent to watt except

 a.(amperes )^2 ohm

b. joule per second

c.Amperes × volts

d.Ampere per volt

38. Resistance having rating 10 ohms,10 watt  is likely to be a.Metallic 

b. Carbon resistor 

c. Wire wound resistor

d.Variable resister

39. Which one of the following does not have negative temperature Coefficient…. A.Aluminium 

b.Paper

c. Rubber

d. Mica

40. Varistors are 

a.Insulators

b.Non-linear resistors

c.Carbon resistors

 d.Resistors with zero temperature coefficient.

******

31.a, 32.d, 33.c, 34.a , 35. b, 36.b, 37.d, 38.c, 39.a, 40.b

Stay with us 

To be continued..........