10th Science Chapter -04 Electricity Creative One Mark Question and Answers Part-04
10th Science Chapter -04 Electricity Creative One Mark Question and Answers Part-04
01.In which one of the following heating effect the current is undesirable
a) electric iron
b) electric motor
c) fuse wire
d) electric bpulb
Correct answer
electric motor
02.Tesla Invented lightning conductor
a) true
b) False
Correct answer
False
03.A parallel circuit consist of three resistors with values of 430, 210 and 100.The total resistance is
a) 0.017
b) 58.82 ohm
c) 58.82 kilo ohm
d) None of the above
Correct answer
58.82 ohm
04.When one of three series resistors is removed from a circuit and the circuit is reconnected the current
a) increase by half
b) increases
c) decreases by half
d) none of the above
Correct answer
increases
05.George Simon ohm invented electrochemical cell
a) true
b) false
Correct answer
false
06.Conductivity is the _____ of resistivity
a) opposite
b) reciprocal
c) equal
d) none of the above
Correct answer
reciprocal
07.The graph between V and I is a straight line
a) true
b) False
Correct answer
true
08.A complete electric circuit is called as
a) Open
b) short
c) Closed
d) Complete
Correct answer
Closed
09.One unit of electrical energy consumed equal to 1000 kilowatt hour
a) true
b) false
Correct answer
false
10.The amount of work done in joules when one unit electric charges moves from one point to another point in an electric circuit is called
a) Resistance
b) Potential difference
c) Current
d) Charge
Correct answer
Potential difference
11.The resistance of a conductor directly proportional
a) Length
b) Area
c) Volt
d) Current
Correct answer
Length
12.If there are two bulbs i.e 150 W bulb and 60 W bulb so which has more resistance?
a) 60 W
b) 150 W
c) Both a and b
d) None of the above
Correct answer
60 W
13.A bird sitting on an uninsulated wire carrying a current feels quite safe because
a) the bird is non-conductor
b) resistance of the bird is very large
c) there is a large potential difference between bird and wire
d) there is no potential difference between bird and wire
Correct answer
there is no potential difference between bird and wire
14.What happens when ammeter connected in parallel
a) Open circuited
b) Closed circuited
c) Short circuited
d) None of the above
Correct answer
Short circuited
15.Fuse wire
a) low melting point
b) has high resistance
c) has low resistance
d) both (a) & (b)
Correct answer
both (a) & (b)
16.Choose the correct statement
a) Nichrome has low resistance and high melting point
b) Fuse wire has high resistance and low melting point
c) Nichrome has high resistance and low melting point
d) Fuse wire has low resistance and high melting point
Correct answer
Fuse wire has high resistance and low melting point
17.Conductance is expressed in terms of
a) mho
b) ohm / m
c) ohm
d) mho /m
Correct answer
mho
18.What happens to current and resistance if the voltage is doubled
a) current doubles and resistance doubles
b) current doubles and resistance is halved
c) current remains the same and resistance doubles
d) current doubles and resistance remains the same
Correct answer
current doubles and resistance remains the same
19.Which is considered t be the common reference for a parallel circuit?
a) Current
b) Resistance
c) Power
d) Voltage
Correct answer
Voltage
20.MCB is used to protect house hold electrical appliances
a) true
b) false
Correct answer
true
