UP-BOARD-XII SERIES Physics
Electromagnetic Induction
13 previous year questions.
Volume: 13 Ques
Yield: Medium
High-Yield Trend
13
2023 Chapter Questions 13 MCQs
01
PYQ 2023
medium
physics ID: up-board
Write down the definition of coefficient of self-induction and coefficient of mutual induction. Current of 5 A decreases to zero in 0.1 s in a coil of 5 H self-inductance. Find out induced e.m.f. produced in the coil.
02
PYQ 2023
medium
physics ID: up-board
What are eddy currents? Give two applications of it.
03
PYQ 2023
medium
physics ID: up-board
What is electromagnetic induction? Give names of two devices based on it.
04
PYQ 2023
medium
physics ID: up-board
What is the principle of a transformer?
05
PYQ 2023
medium
physics ID: up-board
The length of wingspan of an aeroplane is meters and it is flying with a velocity of from north towards south. If the horizontal component of Earth's magnetic field is and induced e.m.f. produced between the ends of the wingspan is , then obtain the expression for the angle of dip at that place.
06
PYQ 2023
medium
physics ID: up-board
A metallic stick of length confined in a plane is rotated in its own plane with angular velocity in a uniform magnetic field exists in the region. Find the expression of emf induced between the ends of the stick.
07
PYQ 2023
medium
physics ID: up-board
A light ray going through a prism with the angle of prism 60Β°, is found to have minimum deviation of 30Β°. What is the refractive index of the prism material?
08
PYQ 2023
medium
physics ID: up-board
What are Faradayβs laws of electromagnetic induction? A wire is placed in a magnetic field of , with its perpendicular plane in the form of a circle of radius . If the wire is pulled in the same plane in , so as to give it the form of a square, then find the average induced e.m.f. produced in the loop.
09
PYQ 2023
medium
physics ID: up-board
A metallic rod PQ whose length is , is moving with a uniform speed of in a uniform magnetic field of . A capacitor of capacitance is connected as shown in the figure. Magnetic field is directed downwards, perpendicular to the plane of the paper. Find out:
Induced e.m.f. across the rod PQ.
Charge on the capacitor.
Which plate of the capacitor has positive charge?
Induced e.m.f. across the rod PQ.
Charge on the capacitor.
Which plate of the capacitor has positive charge?
10
PYQ 2023
medium
physics ID: up-board
What is the principle of a transformer? Explain the working process of a step-up transformer by drawing a circuit diagram. Enunciate any two reasons of energy losses in transformer.
11
PYQ 2023
medium
physics ID: up-board
A square loop of each side 10 cm and having resistance 0.5 is kept vertical in east-west plane. The uniform magnetic flux density of 0.01 Tesla is established across the plane along north-east direction. After 0.70 sec, the magnetic field is reduced to zero with uniform rate. Calculate the following:
(i) the initial and final magnetic flux,
(ii) the induced e.m.f.,
(iii) the induced current,
(iv) the induced charge.
(i) the initial and final magnetic flux,
(ii) the induced e.m.f.,
(iii) the induced current,
(iv) the induced charge.
12
PYQ 2023
medium
physics ID: up-board
What do you understand by electromagnetic induction? State Faradayβs laws regarding electromagnetic induction.
13
PYQ 2023
medium
physics ID: up-board
Define 1 henry of self-inductance.
About Electromagnetic Induction - UP-BOARD-XII
Electromagnetic Induction is a vital chapter for UP-BOARD-XII aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Electromagnetic Induction PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Electromagnetic Induction carry the most weight. Then, tackle the questions iteratively to solidify your understanding.