Physics Quiz on “Electricity” Based on NCERT for SSC 2016

Q1. The actual flow of electrons which constitute the current is from:
(a) Negative to positive terminal
(b) Positive to negative terminal
(c) Flow at random
(d) None of the above

Q2.  What is the effect of changing the wire in a circuit from a straight thick wire to a longer (coiled) thick wire?
(a) The bulbs become dimmer
(b) The bulbs become brighter
(c) The bulbs stay at the same level of brightness
(d) none of the above

Q3. Match the following with correct response. 
List-I List-II
(1) Best conductor  (A) Silicon 
(2) Standard resistor  (B) Silver
(3) Semi- conductor  (C) Ebonite 
(4) Insulator  (D) Constantan
(a) 1-C, 2-B, 3-D, 4-A
(b) 1-A, 2-C, 3-B, 4-D
(c) 1-B, 2-D, 3-A, 4-C
(d) 1-D, 2-A, 3-C, 4-B

Q4. Statement A : Resistivity increases with decrease in temperature in insulators. , 
Statement B : Resistivity of a conductor increases with increasing temp.
(a) Neither statement A nor statement B is true
(b) Both the statements A and B are true
(c) Statement A is true, B is false
(d) statement A is false, B is true

Q5. Maganin is an alloy of—
A. Copper 
B. Manganese 
C. Nickel 
D. Platinum
(a) A and C
(b) A and B
(c) All of these
(d) A, B and C

Q6. Nichrome and copper wires of the same length and same radius are connected in series. Current I is passed through them. Which of the two get heated first?
(a) copper wire
(b) Nichrome wire 
(c) None of these
(d) Both

Q7. What is the SI unit of electrical conductance?
(a) Volt
(b) Watt
(c) Siemens 
(d) Ampere

Q8. Match the following with correct response. 
List-I                         List-II
(1) Bulb filament                  (A) Nichrome 
(2) Heating element of an electric iron  (B) Potential difference 
(3) Super conductors                  (C) Zero resistivity
(4) EMF is a                  (D) Tungsten
(a) 1-A, 2-C, 3-B, 4-D
(b) 1-B, 2-D, 3-A, 4-C
(c) 1-D, 2-A, 3-C, 4-B
(d) 1-C, 2-B, 3-D, 4-A

Q9. What should be present in a substance to make it a conductor of electricity?
(a) Strongly held electrons
(b) Free electrons
(c) Strongly held protons
(d) Free protons

Q10. Which of the following is a conductor of electricity?
(a) Silver
(b) Copper
(c) Aluminium
(d) All of the above 






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