CURRENT ELECTRICITY PART 11

CURRENT ELECTRICITY PART 11

101. A .......... resistor is commonly called a control.

A. Fixed Resister

B. Variable Resister

C. Carbon resistor

D. wire wound resistor

102. The part represented by the symbol marked  R1 is a........ resistor

A. Fixed resistor

B. Variable resistor

C. Wire wound resistor

D.none of the above

103.The ......... is a unit of potential difference and electro motive force 

A. volt 

B. Ohm

C. Ampere

D. Watt

104. Atoms with four valence electrons are

A. semiconductor conductor 

B. insulator 

C. Conductor

D. none of the above

105. ..........of same material may be defined as the resistance between the opposite faces of a metre cube of that material.

A. Resistivity 

B.  Conductivity

C. Resistance

D. Indusulator

106. One newton metre is same as

A. 1 watt 

B. 1 joule

C. 1 joule second

D. Five joules

107. which of the following can have negative temperature coefficient 

A. compounds of silver

B. liquid metals 

C. metallic alloys 

D. electrolytes

108. All good conductors have high

A. conductance

B. resistance

C. reluctance 

D. thermal conductivity

109. Voltage dependent risters are usually made from

A.Charcoal

B.  Siliconcarbide

C. Nichrome

D. Graphite

110. An open resistor when checked with an ohmmeter reads

A. Zero

B. infinite 

C. high  but within tolerance

D. low but not zero

ANSWER:- 

101.B, 102.B, 103.A, 104.A, 105.A, 106. B, 107.D, 108.A, 109.C, 110.B