Lec 1 (Intro) विधुत चुंबकीय प्रेरण Electro-Magnetic Inductiom | Chap 6 | 12th Physics |By Gopal sir

Class 12 Physics | Chapter 6 Electromagnetic Induction | Important Questions and Quick Revision Part-1

A circular current carrying coil has a radius a. Find the distance from the centre of coil, on its axis, where is the magnetic induction will be 1/6th of its value at the centre of coil.

At some location on earth the horizontal component of earth's magnetic field is 18 xx 10^(-6)T . At this location, magnetic needle of length 0.12m and pole strength 1.8 Am is supended from its mid-point using a thread, it makes 45^(@) angle with horizontal in equilibrium. To keep this needle horizontal, th evertical force that should be applied at one of its ends is

The electric field part of an electromagnetic wave in vacuum is given by E = 6 cos [1.2 ("rad")/(m) y + 3.6 xx 10^(8) ("red")/(s) t ] hat(i) (N)/(C ) , then find i) frequency of propagation (f) (ii) Ampitude of magnetic field in electromagnetic wave

The electric field part of the electromagnetic wave in vacuum is given by E= 6 cos [1.2 ("rad")/(m) y + 3.6 xx 10^(8) ("rad")/(s) t ] l (N)/(C ) , then find (a) Frequency of propagation (f) (b) Wavelength (lambda) (c) Direction of propagation (d) Amplitude of magnetic field in electromagnetic wave (e) An expression for magnetic field part of the wave.

At time t_(1) , an electron is sent along the positive direction of x-axis through both an electric field and a magnetic field, with directed parallel to the y-axis Graph gives the y-component E_(max) of the net force on the electron due to the two fields, as a function of th eelectron's speed V at time t_(1) . Assuming B_(x) = 0 , find magnitude of electric field in mN//C and find z component of magnetic field also (Use e = 1.6 xx 10^(-19) C )

An alpha -particle is describing a circle of radius 0.45 m in a field of magnetic induction 1.2 "weber/m"^(2) . The potential difference required to accelerate the particle, (The mass of a-particle is 6.8 × 10^(-27) kg and its charge is 3.2 xx 10^(-19) coulomb.) will be —

A cyclotron has an oscillator frequency 12MHz and a dee of radius 50cm . Calculate the magnetic induction needed to accelerate deuterons of mass 3.3 xx 10^(-27)kg and charge 1.6xx10^(-19)C

An examination was held during the 2 weeks of April 3rd-Sunday to 16th Saturday. There was 1 paper for the six subjects - Physics, Chemistry, Biology, Maths, English and Hindi. Only 1 paper per day No exam on Saturdays and Sundays and Holiday on April 5th. Only 3 exams were there in a week. Chemistry was before Biology and Maths was on the next day of Hindi. The day on which the paper of biology and maths were held was the same, while that for chemistry and physics was also the same. There was no exam for 3 days between Physics and the exam prior to it. Hindi exam on Tuesday and one exam between Hindi and English exam. There was at least a gap of one day between any 2 science paper. Which of the following exam was held on April 12th ?