Recently Active Physics Questions

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A small ball is suspended over an infinite horizontal conducting plane by means of an insulating string of stiffness k. As soon as the ball is charged it descends by x and the separation from the plane becomes l. Find the cha ...

In the circuit shown, calculate: a. p.d. between B and D b. current in the galvanometer c. effective resistance across the points A and C *Image* ...

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If current I passes through resistance r in time t , the amt of heat energy produced = I2rt My question is that why is this I2 and not I? ...

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If current I passes through resistance r in time t , the amt of heat energy produced = I2rt My question is that why is this I2 and not I? ...

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Why is the emf lesser than the terminal voltage when the cell is charged by passing current through it? ...

A hemisphere network of radius a is made by using a conducting wire of resistance per unit length r. Find the equivalent resistance across OP. *Image* ...

Consider a cylindrical vessel of height 'H'. A light source is placed at the center of the base. The area illuminated on the ceiling above the container is 'A'. Now a liquid is half filled in the cylinder. if the new area of ...

In the circuit shown in figure the reading of ammeter is the same with both switches open as with both closed. Then find the resistance R. (ammeter is ideal) *Image* ...

*Image* Find the foce of attraction between the 2 charges??????? ...

*Image* A ring as shown in the 'figure' is made up of two semi circular rings A and B of masses " 2 Kg " and " 4 Kg " respectively. The ring has diameter " 1 m ". If the Ring rolls without slipping, Find – 1.Angular Acceler ...

HOW CAN THE VELOCITY OF ULTRASOUND, INFRA SOUND AND AUDIO WAVES BE EQUAL? IN THE Q.10 OF THE RECENT CHAKRAVYUH TEST OF CLASS 7 THE OPTIONS O B AND C ARE THE SAME BUT WHY I AM GIVEN WRONG WHEN I PRESS THE OPTION C ? ...

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Find equivalent resistance between A and D. *Image* ...

If each resistance of 12Ω then find the equivalent resistance between A and B. *Image* ...

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Can we apply eq. of continuity in this????.. ...