Class 10 Magnetic Effects Of Electric Current CBSE Questions & Answers

Class 10 · Magnetic Effects Of Electric Current

Class 10 Magnetic Effects of Electric Current CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the following is a vector quantity?
  • A
    Force
  • B
    velocity
  • C
    magnetic field
  • D
    All of these field
    Correct
2
Which of the following organs in the human body where the magnetic field produced is significant?
  • A
    Heart, brain
    Correct
  • B
    Heart, lung
  • C
    liver, heart
  • D
    lungs, brain
3
‘An electric current always produces a magnetic field’ , The above statement is
  • A
    partially true
  • B
    partially false
  • C
    false
  • D
    true
    Correct
4
Which of the following sentences is correct about Overloading
  • A
    overloading is caused by connecting too many appliances to a single socket
  • B
    overloading can occur when the live wire and the neutral wire come into direct contact
  • C
    overloading can occur due to an accidental hike in the supply voltage
  • D
    All of these
    Correct
5
Find the incorrect statement
  • A
    magnetic field lines can intersect each other
  • B
    a wire with a red insulation is usually the neutral wire of an electric supply
  • C
    field lines emerge from the south pole and merge at north pole
  • D
    all of these
    Correct
6
By right – hand thumb rule for current carrying wire the thumb point toward the
  • A
    None of these
  • B
    direction of current
    Correct
  • C
    direction of force
  • D
    direction of field lines
7
The magnetic field lines inside a long current-carrying solenoid are nearly-
  • A
    Straight
    Correct
  • B
    Circular
  • C
    Elliptical
  • D
    Parabolic
8
What are the factors affecting the strength of magnetic field at a point due to a straight conductor carrying current?
  • A
    length of the wire
  • B
    current
  • C
    All of these
    Correct
  • D
    distance of the point from the wire
9
You have a coil and a bar magnet, you can produce an electric current by moving-
  • A
    The magnet, but not the coil
  • B
    The coil, but not the magnet.
  • C
    Neither the magnet nor the coil.
  • D
    Either the magnet or the coil.
    Correct
10
An electric motor-
  • A
    Provides a constant potential difference
  • B
    Measures electric current
  • C
    Converts electrical energy into kinetic energy.
    Correct
  • D
    Measures potential difference
11
What will happen when a magnet is taken towards a circular coil?
  • A
    no effect on the circular coil
  • B
    No current will flow in the circuit
  • C
    None of these
  • D
    Induced current will start flowing
    Correct
12
Who said that current can cause magnetic field?
  • A
    oersted
    Correct
  • B
    None of these
  • C
    Fleming
  • D
    Michael faraday
13
An electron beam is moving vertically upwards if it passes through a magnetic field which is directed from south to north in a horizontal plane then in which direction will the beam be deflected?
  • A
    towards east
  • B
    towards west
    Correct
  • C
    towards south
  • D
    towards north
14
The fuse wire should hone
  • A
    Low resistance, High melting point
  • B
    High resistance, High melting point
  • C
    Low resistance, Low melting point
  • D
    High resistance, Low melting point
    Correct
15
Transformer works on the principle of
  • A
    Electric field
  • B
    Electricity
  • C
    electro magnetic Induction
    Correct
  • D
    Magnetic field