The chapter "Magnetic Effects of Electric Current" is a cornerstone of Class 10 Physics, bridging the gap between electricity and magnetism. It introduces students to the fundamental principles that govern modern technology, from the simple doorbell to complex industrial motors. For the CBSE Board Exams, this chapter carries significant weightage, often featuring in high-value case-study questions and direct numerical/diagrammatic problems.
Understanding the directional rules, such as Fleming's Left-Hand and Right-Hand Rules, is crucial for scoring well. This quiz is meticulously designed to align with the latest NCERT syllabus, focusing on conceptual clarity, diagram-based reasoning, and the practical application of electromagnetic principles in domestic circuits.
30
Minutes
30
Questions
1 / -0
Marking
Q1. Which of the following correctly describes the magnetic field near a long straight wire?
The field consists of straight lines perpendicular to the wire.
The field consists of straight lines parallel to the wire.
The field consists of radial lines originating from the wire.
The field consists of concentric circles centered on the wire.
Q2. The phenomenon of electromagnetic induction is:
The process of charging a body.
The process of generating magnetic field due to a current passing through a coil.
Producing induced current in a coil due to relative motion between a magnet and the coil.
The process of rotating a coil of an electric motor.
Q3. The device used for producing electric current is called a:
Generator
Galvanometer
Ammeter
Motor
Q4. At the time of short circuit, the current in the circuit:
Reduces substantially
Does not change
Increases heavily
Vary continuously
Q5. A soft iron bar is introduced inside a current-carrying solenoid. The magnetic field inside the solenoid will:
Decrease
Increase
Remain same
Become zero
Q6. The north pole of a compass needle points towards the:
Magnetic North Pole of the Earth
Geographic North Pole of the Earth
Magnetic South Pole of the Earth
Both (B) and (C)
Q7. What is the shape of the magnetic field lines inside a current-carrying solenoid?
Circular
Parallel straight lines
Elliptical
Non-uniform curves
Q8. A positively charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is:
Towards south
Towards east
Downward
Upward
Q9. The strength of the magnetic field at the center of a circular coil of radius is:
Directly proportional to
Inversely proportional to
Directly proportional to
Inversely proportional to
Q10. Which rule is used to find the direction of force on a current-carrying conductor in a magnetic field?
Right-Hand Thumb Rule
Fleming’s Right-Hand Rule
Fleming’s Left-Hand Rule
Faraday’s Law
Q11. The potential difference between the live wire and the neutral wire in India is:
Q12. If the current in a straight wire is doubled, the magnetic field at a distance from it:
Becomes half
Becomes four times
Remains the same
Becomes double
Q13. Why are magnetic field lines never found to cross each other?
They are parallel to each other.
At the point of intersection, the compass would point in two directions, which is impossible.
They originate from the same pole.
The field is too weak at the crossing point.
Q14. An electron enters a magnetic field at right angles to it. The direction of force acting on the electron will be:
To the right
To the left
Out of the page
Into the page
Q15. The essential difference between an AC generator and a DC generator is:
AC generator has an electromagnet while a DC generator has permanent magnet.
DC generator will generate a higher voltage.
AC generator will generate a higher voltage.
AC generator has slip rings while the DC generator has a commutator.
...and 15 more challenging questions available in the interactive simulator.