Home
Class 12
PHYSICS
(A): An aircraft flies along the meridia...

(A): An aircraft flies along the meridian, the potential at the ends of its wings will be the same.
(R) : Whenever there is change in the magnetic flux e.m.f. induces.

A

Both .A. and .R. are true and .R. is the correct explanation of .A.

B

Both .A. and .R. are true and .R. is not the correct explanation of .A.

C

.A. is true and .R. is false

D

.A. is false and .R. is true

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion (A) and the reason (R) provided. ### Step-by-step Solution: 1. **Understanding the Assertion (A)**: - The assertion states: "An aircraft flies along the meridian, the potential at the ends of its wings will be the same." - When an aircraft flies through the Earth's magnetic field, it experiences a change in magnetic flux due to its motion. This can induce an electromotive force (e.m.f.) across the wings of the aircraft. 2. **Analyzing the Motion of the Aircraft**: - The aircraft is moving along the meridian, which means it is moving in a straight line in a specific direction (let's say north). - The wings of the aircraft are perpendicular to the direction of motion and are also subject to the Earth's magnetic field, which has a vertical component. 3. **Induction of EMF**: - According to Faraday's law of electromagnetic induction, when there is a change in magnetic flux through a circuit, an e.m.f. is induced. - In this case, as the aircraft moves through the magnetic field, there is a change in magnetic flux linked with the wings, leading to an induced e.m.f. across the ends of the wings. 4. **Conclusion about the Assertion**: - Since there is an induced e.m.f. due to the motion of the aircraft through the magnetic field, the potential at the ends of the wings (points A and B) will not be the same. Therefore, the assertion is **false**. 5. **Understanding the Reason (R)**: - The reason states: "Whenever there is a change in the magnetic flux, e.m.f. induces." - This statement is true as it is a fundamental principle of electromagnetic induction. 6. **Final Evaluation**: - The assertion (A) is false, while the reason (R) is true. Thus, the correct conclusion is that the assertion does not correctly explain the reason. ### Final Answer: - Assertion (A) is false, and Reason (R) is true.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE - II (MAGNETIC FLUX, FARADAY.S LAW, LENZ.S LAW , AC GENERATOR)|10 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE - II (MOTIONAL EMF)|3 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE - I (SELF AND MUTUAL INDUCTION)|16 Videos

  • ELECTRIC FIELD AND POTENTIAL

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|26 Videos

  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -II|22 Videos

Similar Questions

Explore conceptually related problems

A : Total induced emf in a loop is not confined to any particular point but it is distributed around the loop in direct proportion to the resistances of its parts. R: In general when there is no change in magnetic flux, no induced emf is produced.

You are given two coils A and B. Through each coil, the initial magnetic flux is same. In which coil, the em.f. induced will be more if the number of turns in the coil A is twice that of the coil B and the magnetic flux is reduced to zero in coil A, two times faster than in coil B?

A metallic rod of length 'l' is tied to a string of length 2l and made to rotate with angular speed w on a horizontal table with one end of the string fixed. If there is a vertical magnetic field 'B' in the region, the e.m.f. Induced across the ends of the rod is

STATEMENT - 1 : Whenever there is a change in flux linked with a coil in a circuit, an induced current is set up in it. and STATEMENT - 2 : Whenever there is a change in flux linked with a coil in a circuit, an induced emf is set up in it.

(A): When a conducting wire loop which is inside a uniform magnetic field directed perpendicular to its planes is moving with uniform velocity, an e.m.f is induced in it. (R) : When magnetic flux linked with a conducting wire loop changes with time an e.m.f is induced in the coil.

A small, metal wire loop is dragged across the gap between the poles of a magnet in 0.4 s. If the change in magnetic flux for the wire is 8xx10^(-4)Wb , then the emf induced in the wire is

A horizontal straight wire 10 m long extending from east to west falling with a speed of 0.5 ms^(-1) at right angles to the horizontal component of the earth's magnetic field 0.30 xx 10^(-4)Wb m^(-2) (a) What is the instantaneous value of the e.m.f. induced in the wire ? (b) What is the direction value of the e.m.f. (c) Which end of the wire is at higher electric potential ?

(A) : Self-inductance is called the inertia of electricity. (R) : Self-inductance is the phenomenon, according to which an opposing induced e.m.f. is produced in a coil as a result of change in current or magnetic flux linked with the coil.

A coil of metal wire is kept stationary in a non-uniform magnetic field. An e.m.f. Is induced in the coil.

A coil of metal wire is kept stationary in a non-uniform magnetic field. An e.m.f. Is induced in the coil.