Magnetic Effects of Electric Current MCQ Questions Class 10 Science Chapter 13
NCERT MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current. Magnetic Effects of Electric Current MCQ Questions with Answers from Class 10 Science.
Magnetic Effects of Electric Current MCQ Questions Class 10 Science Chapter 13
Magnetic Effects of Electric Current Multiple Choice Questions with Answers Class 10 Science Chapter 13 PDF is available.
1) The compass needle get deflected when a bar magnet is brought near to it because
a) It is huge magnet
b) It is not magnet
c) It acts as a small bar magnet
d) None
Ans: c) it acts as a small bar magnet
2) The region surrounding the magnet in which force of the magnet can be detected is called as
a) Electric field
b) Magnetic field
c) Both a and b
d) None
Ans: b) magnetic field
3) Magnetic field is the _____ quantity
a) Scalar
b) Tensor
c) Vector
d) Both a and b
Ans: c) vector
4) The magnetic field lines directed as
a) South to north
b) North to South
c) East to waste
d) Waste to east
Ans: b) north to south
5) Two magnetic field lines______ each other
a) Intersects each other
b) Not intersect each other
c) Cross each other
d) None
Ans: b) not intersect each other
6) The magnetic field produced increases as the current through the wire
a) Decreases
b) Increases
c) Both a and b
d) None
Ans: b) increases
7) A coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a
a) Magnet
b) Toroid
c) Solenoid
d) None
Ans: c) solenoid
8) When soft iron is placed inside the coil of solenoid then it forms
a) Bar magnet
b) Horse shoe magnet
c) Electromagnet
d) None
Ans: c) electromagnet
9) The magnetic field lines inside the solenoid are in the form of
a) Intersecting lines
b) Crossing lines
c) Parallel lines
d) Both a and b
Ans: c) parallel lines
10) Inside the solenoid the magnetic field is
a) Different at different points
b) Same at all points
c) Non uniform
d) None
Ans: b) same at all points
11) Electric motor converts
a) Mechanical energy to electrical energy
b) Electrical energy to mechanical energy
c) Thermal energy to electrical energy
d) Electrical energy to thermal energy
Ans: b) electrical energy to mechanical energy
12) The phenomenon of electromagnetic induction was first studied by
a) Orested
b) Ohm
c) Michael Faraday
d) Einstein
Ans: c) Michael Faraday
13) Electric generator converts
a) Electrical energy to mechanical energy
b) Mechanical energy to electrical energy
c) Thermal energy to electrical energy
d) Electrical energy to chemical energy
Ans: b) mechanical energy to electrical energy
14) The wire with green insulation is the
a) Earth wire
b) Neutral wire
c) Live wire
d) None
Ans: a) earth wire
15) The wire with red insulation is
a) Earth wire
b) Neutral wire
c) Live wire
d) None
Ans: c) live wire
16) The wire with black insulation is
a) Earth wire
b) Live wire
c) Neutral wire
d) None
Ans: c) neutral wire
17) In our houses we receive ac electric power of 220V with a frequency of
a) 500 Hz
b) 5Hz
c) 50Hz
d) 0.5Hz
Ans: c) 50 Hz
18) ____ is the most important safety device used for protecting the circuit due to short- circuiting or overloading.
a) Resistor
b) Rheostat
c) Fuse
d) Earth wire
Ans: c) fuse
19) Fleming’s left hand rule is used to find
a) Current
b) Magnetic field
c) Magnetic force
d) None
Ans: c) magnetic force
20) Fleming’s right hand rule is used to find
a) Magnetic field
b) Magnetic force
c) Electric current
d) Induced current direction
Ans: d) induced current direction
21) The right hand rule gives the direction of
a) Magnetic field
b) Magnetic force
c) Electric current
d) Electric field
Ans: a) magnetic field
In case you are missed :- Previous Chapter MCQ Questions
22) Bar magnet attracts the pieces of
a) Iron
b) Steel
c) Cobalt
d) a, b and c
Ans: d) a, b and c
23) The like poles of magnets
a) Attracts each other
b) Repels each other
c) Both a and b
d) None
Ans: b) repels each other
24) The unlike poles of the magnet
a) Attracts each other
b) Repels each other
c) Both a and b
d) None
Ans: a) attracts each other
25) Where the magnetic field lines are closer then at that point magnetic field is
a) Weaker
b) Stronger
c) Non uniform
d) Uniform
Ans: b) stronger
26) When circuit is open ____ cannot pass through it.
a) Voltage
b) Resistance
c) Current
d) Potential difference
Ans: c) current
27) Resistivity is also called as
a) Resistance
b) Variable resistance
c) Specific resistance
d) High resistance
Ans: c) specific resistance
28) Electrical energy is measured in
a) Watt
b) KWh
c) J
d) None
Ans: c) J
29) The SI unit of magnetic induction is
a) Newton
b) J
c) Tesla
d) KWh
Ans: c) Tesla
30) The device which produces electric current is called as
a) Electric motor
b) Electric generator
c) Ammeter
d) Voltmeter
Ans: b) electric generator
31) Wood is the
a) Insulator
b) Magnetic material
c) Non magnetic material
d) Both a and c
Ans: d) both a and c
32) Electric generator works on the principle of
a) Magnetism
b) Electromagnetic induction
c) Right hand thumb rule
d) Fleming’s left hand rule
Ans: b) electromagnetic induction
33) Dynamo rule is named to
a) Fleming’s left hand rule
b) Fleming’s right hand rule
c) Right hand thumb rule
d) Electromagnetic induction
Ans: a) Fleming’s left hand rule
34) The speed of rotation of an electric motor can be increased by _____ the area of the coil.
a) Decreasing
b) Making constant
c) Increasing
d) None
Ans: c) increasing
35) What is the frequency of DC
a) 50Hz
b) 500Hz
c) 0Hz
d) 100Hz
Ans: c) 0Hz
36) The relationship between electricity and magnetism is given by
a) Fleming
b) Maxwell
c) Oersted
d) Joule
Ans: c) Oersted
37) Inside the magnet the direction of magnetic field lines is
a) North to South
b) South to north
c) In one direction
d) In all directions
Ans: b) south to north
38) The direct current always flows in
a) All directions
b) Not having direction
c) In one direction
d) None
Ans: c) in one direction
39) The power factor for AC circuit is
a) 0
b) 1
c) Lies between 0 and 1
d) Infinity
Ans: c) lies between 0 and 1
40) AC circuit are used for long distance transmission because of
a) High energy losses
b) No energy losses
c) Low energy losses
d) None
Ans: c) low energy losses
41) The AC used in India changes its direction ____ times in one second.
a) 200
b) 300
c) 500
d) 100
Ans: d) 100
42) The power factor for DC circuit is
a) 0
b) 1
c) Lies between 1 and 0
d) Infinity
Ans: b) 1
43) When the circuit become short circuited then
a) Current increases
b) Potential difference increases
c) Resistance increases
d) Current decreases
Ans: a) current increases
44) Electric motor is used in
a) Electric fans
b) Electric mixers
c) Washing machine
d) All
Ans: d) all
45) Short circuit occurs when live wire comes in contact with
a) Earth wire
b) Neutral wire
c) Live wire
d) None
Ans: b) neutral wire
46) In electric motor, split ring acts as a
a) Transformer
b) Transducer
c) Commutator
d) None
Ans: c) commutator
47) The source of DC current are
a) Dry cell
b) Solar cell
c) Thermocouple
d) All
Ans: d) all
48) The AC current is produced by
a) AC generator
b) Thermal power generator
c) Nuclear power generator
d) All
Ans: d) all
In case you are missed :- Next Chapter MCQ Questions
