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08 November 2019: The Hindu Analysis

UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 8th November 2019. Important news and views to... View Article

UPSC 2019: Weekly GK and Current Affairs Quiz Nov 09 – Nov 15

UPSC 2019: Weekly GK and Current Affairs Quiz Nov 09 - Nov 15 with Multiple Choice Questions and answers for IAS Exam Preparation other... View Article

08 Nov 2019: UPSC Exam Comprehensive News Analysis

8 Nov 2019 CNA:- Download PDF Here TABLE OF CONTENTS A.GS1 Related B.GS2 Related POLITY AND GOVERNANCE 1. Report: lack of transparency in High... View Article

The velocity time graph will be a straight line with a non-zero slope for the motion of a ball which is launched vertically up and then comes back down under the influence of gravitational acceleration. Choose the correct option

It is true.... View Article

What is the SI Unit of Magnetic Flux ?

The measurement of the total magnetic field which passes through a given area is known as magnetic flux. It is useful in describing the effects... View Article

Choose the right answer from the following. A constant current I is maintained in a solenoid. Which of the following quantities will not increase if an iron rod is inserted in the solenoid along its axis? (a) the magnetic field at the centre (b) self-inductance of the solenoid (c) magnetic flux linked with the solenoid (d) rate of Joule heating.

Answer: rate of joule heating Explanation: When an iron rod is inserted inside a solenoid the magnetic field inside the solenoid increases due... View Article

A magnet is moved towards the coil (a) quickly and (b) slowly, and then the work done is

This is because when the magnet is moved quickly, opposing emf induced in the coil will be more.... View Article

What is the total number of magnetic lines of force crossing a surface called?

The measurement of the total magnetic field that passes through a given area is known as magnetic flux. It is helpful in describing the effects... View Article

Coefficient of mutual induction is the ratio of

Coefficient of mutual induction is the ratio of induced e.m.f in secondary coil to the rate of change of current in primary coil.... View Article

If we take the analogy between mechanical motion and electric circuits, then inductance is analogous to

Inductance in electric circuits plays same role as moment of inertia in mechanical circuits.... View Article

Lenz’s law obeys

Lenz's law obeys the law of conservation of energy and Newton's third law. Lenz’s law states that: The induced electromotive force with... View Article

Inductors connected in series

Two pure inductors each of self-inductance L are connected in series. Find the total inductance. The total inductance of inductors connected in... View Article

The principle of electromagnetic induction is used in which of the following phenomenon

Generation of electricity in hydroelectricity.... View Article

Which of the following law’s gives the direction of induced emf? (A) Lenz’s law (B) FLeming’s left-hand rule (C) Ohm’s law (D) Faraday’s law of electromagnetic induction

Answer: (A) Lenz's law. Lenz's law is used for determining the direction of induced current. Lenz's law of electromagnetic induction states... View Article

If the North Pole of the bar magnet is introduced into a coil at the end A which of the following statements correctly depicts the phenomenon taking place.

According to Lenz’s law the end A becomes North Pole to oppose the motion of the magnet.... View Article

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