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A 10 cm long conductor is linked with a magnetic field of 1 weber/sq. m. When a current of 10 A passes through it, it will experience a force of
A 100 W bulb is kept on for 10 h per day in September. The electrical energy consumed in that month in kilowatt hours (kwh) is
A 100 watt bulb is kept switched ON for four hours. The units of electrical energy consumed
A 3 phase semiconverter when supplying a certain load has a rectification efficiency of 0.6 and transformer utilisation factor of 0.35
A ball is moving with a speed v towards north, collides with an identical ball, moving with the same speed towards east. After the collision, the two balls stick together and move towards north-east. The speed of the combination is
A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of
A ball is thrown vertically upwards. Assuming the air resistance to be constant and cosiderable
A ball moving with uniform velocity comes to rest in a distance of 72 m in 6 s. Its initial velocity and retardation are
A ball rolling along the ground gradually slows down and finally comes to rest is due to _
A balloon filled with hydrogen will
