# DC Circuits (Part 3) MCQs with Answers

### Chapter 1. DC Circuits

101. Which among the following is an expression for energy?
(a) V2It
(b) V2Rt
(c) V2t/R
(d) V2t2/R

102. Which among the following is an expression for energy?
(a) V2It
(b) V2Rt
(c) V2t/R
(d) V2t2/R

103. Which among the following is an expression for energy?
(a) V2It
(b) V2Rt
(c) V2t/R
(d) V2t2/R

104. Which among the following is an expression for energy?
(a) V2It
(b) V2Rt

c) V2t/R
(d) V2t2/R

105. A battery converts___________
(a) Electrical energy to chemical energy
(b) Chemical energy to electrical energy
(c) Mechanical energy to electrical energy
(d) Chemical energy to mechanical energy

106. A battery converts___________
(a) Electrical energy to chemical energy
(b) Chemical energy to electrical energy
(c) Mechanical energy to electrical energy
(d) Chemical energy to mechanical energy

107. A battery converts___________
(a) Electrical energy to chemical energy
(b) Chemical energy to electrical energy
(c) Mechanical energy to electrical energy
(d) Chemical energy to mechanical energy

108. A battery converts___________
(a) Electrical energy to chemical energy
(b) Chemical energy to electrical energy
(c) Mechanical energy to electrical energy
(d) Chemical energy to mechanical energy

109. Materials which easily allow the passage of electric current are known as ______

(a) Insulators
(b) Conductors
(c) Dielectrics
(d) Semi-conductors

110. Materials which easily allow the passage of electric current are known as ______
(a) Insulators
(b) Conductors
(c) Dielectrics
(d) Semi-conductors

111. Materials which easily allow the passage of electric current are known as ______
(a) Insulators
(b) Conductors
(c) Dielectrics
(d) Semi-conductors

112. Materials which easily allow the passage of electric current are known as ______
(a) Insulators
(b) Conductors
(c) Dielectrics
(d) Semi-conductors

113. Which of the following statements are true with regard to resistance?
(a) Resistance is directly proportional to a length of the wire
(b) Resistance is directly proportional to an area of cross section of the wire
(c) Resistance is inversely proportional to the length of the wire
(d) Resistance is inversely proportional to the resistivity of the wire

114. Which of the following statements are true with regard to resistance?
(a) Resistance is directly proportional to a length of the wire
(b) Resistance is directly proportional to an area of cross section of the wire
(c) Resistance is inversely proportional to the length of the wire
(d) Resistance is inversely proportional to the resistivity of the wire

115. Which of the following statements are true with regard to resistance?
(a) Resistance is directly proportional to a length of the wire
(b) Resistance is directly proportional to an area of cross section of the wire
(c) Resistance is inversely proportional to the length of the wire
(d) Resistance is inversely proportional to the resistivity of the wire

116. Which of the following statements are true with regard to resistance?
(a) Resistance is directly proportional to a length of the wire
(b) Resistance is directly proportional to an area of cross section of the wire
(c) Resistance is inversely proportional to the length of the wire
(d) Resistance is inversely proportional to the resistivity of the wire

117. Which, among the following is a unit for resistivity?
(a) ohm/metre
(b) ohm/metre2
(c) ohm-metre
(d) ohm-metre2

118. Which, among the following is a unit for resistivity?
(a) ohm/metre
(b) ohm/metre2
(c) ohm-metre
(d) ohm-metre2

119. Which, among the following is a unit for resistivity?
(a) ohm/metre
(b) ohm/metre2
(c) ohm-metre
(d) ohm-metre2

120. Which, among the following is a unit for resistivity?
(a) ohm/metre
(b) ohm/metre2
(c) ohm-metre
(d) ohm-metre2

121. Which of the following statements are true with regard to resistivity?
(a) Resistance depends on the temperature
(b) Resistance does not depend on the temperature
(c) Resistivity depend on the length
(d) Resistivity depend on area of cross section

122. Which of the following statements are true with regard to resistivity?
(a) Resistance depends on the temperature
(b) Resistance does not depend on the temperature
(c) Resistivity depend on the length
(d) Resistivity depend on area of cross section

123. Which of the following statements are true with regard to resistivity?
(a) Resistance depends on the temperature

(b) Resistance does not depend on the temperature
(c) Resistivity depend on the length
(d) Resistivity depend on area of cross section

124. Which of the following statements are true with regard to resistivity?
(a) Resistance depends on the temperature
(b) Resistance does not depend on the temperature
(c) Resistivity depend on the length
(d) Resistivity depend on area of cross section

125. The reciprocal of resistivity is________
(a) Conductance
(b) Resistance
(c) Conductivity
(d) Impedance

126. The reciprocal of resistivity is________
(a) Conductance
(b) Resistance
(c) Conductivity
(d) Impedance

127. The reciprocal of resistivity is________
(a) Conductance
(b) Resistance
(c) Conductivity
(d) Impedance

128. The reciprocal of resistivity is________
(a) Conductance
(b) Resistance
(c) Conductivity
(d) Impedance

129. Resistivity of a wire depends on
(a) length
(b) material
(c) cross section area
(d) none of the above

130. Resistivity of a wire depends on
(a) length
(b) material
(c) cross section area
(d) none of the above

131. Resistivity of a wire depends on
(a) length
(b) material
(c) cross section area
(d) none of the above

132. Resistivity of a wire depends on
(a) length
(b) material
(c) cross section area
(d) none of the above

133. Which of the following is not the same as watt?
(a) joule/sec
(b) amperes/volt
(c) amperes x volts
(d) ( amperes )2 x ohm

134. Which of the following is not the same as watt?
(a) joule/sec
(b) amperes/volt
(c) amperes x volts
(d) ( amperes )2 x ohm

135. Which of the following is not the same as watt?
(a) joule/sec
(b) amperes/volt
(c) amperes x volts
(d) ( amperes )2 x ohm

136. Which of the following is not the same as watt?
(a) joule/sec
(b) amperes/volt
(c) amperes x volts
(d) ( amperes )2 x ohm

137. One kilowatt hour of electrical energy is the same as
(a) 36 x 105 watts
(b) 36 x 105 ergs
(c) 36 x 105 joules

(d) 36 x 105 B.T.U.

138. One kilowatt hour of electrical energy is the same as
(a) 36 x 105 watts
(b) 36 x 105 ergs
(c) 36 x 105 joules
(d) 36 x 105 B.T.U.

139. One kilowatt hour of electrical energy is the same as
(a) 36 x 105 watts
(b) 36 x 105 ergs
(c) 36 x 105 joules
(d) 36 x 105 B.T.U.

140. One kilowatt hour of electrical energy is the same as
(a) 36 x 105 watts
(b) 36 x 105 ergs
(c) 36 x 105 joules
(d) 36 x 105 B.T.U.