Recent questions tagged #mcq

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Coulomb's law is applicable to

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Explain coulomb's law?

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Can a body have a charge of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Quantisation of charge implies : (a) charge cannot be destroyed (b) charge exists on particles (c) there is a minimum permissible charge on a particle (d) charge, which is a fraction of a charge on an electron is not possible

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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When a body is grounded, electrons from the earth flow into the body. This means the body is :

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A square conducting loop is placed in the time varying magnetic field `((dB)/(dt)=+'ve constant')`.The centre of square coincides with axis of cylindrical region of magnetic field. The directions of induced electric field at point a, b and c.Consider a conducting circular loop placed in a magnetic field as shown in figure. When magnetic field changes with time, magnetic flux also changes and emf `e=-(dphi)/(dt)` is induced. If resistance of loop is R then induced current is `i=e/R`. For current, charges must have non–zero average velocity. Magnetic force cannot make the stationary charges to move. Actually there is an induced electric

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Electric force and magnetic force are jointly called electrom agnetic force. Reason: Electric and magnetic effects are

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Cavendish’s ExperimentThe figure shows the schematic drawing of Cavendish’s experiment to determine the value of the gravitational constant. The bar AB has two small lead spheres attached at its ends. The bar is suspended from a rigid support by a fine wire.Two large lead spheres are brought close to the small ones but on opposite sides as shown. The value of G from this experiment came to be `6.67 xx 10^(-11) N-m^2'/'kg^2`.The big spheres attract the nearby small ones by a force which

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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