Explain the Types of Refrigeration ?

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What is Heat ?

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What is the use of rectifiers? Point out them one by one.

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Explain the Mass and Weight ?

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When we jump form the boat to the bank why the boat goes backwards from the bank ?

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why we use Transistor?

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a ball of mass 500g moving with a velocity of 10m/s collides with another ball of mass 250g.after the impact,the second ball moved off with a velocity of 8m/s calculate the final velocity of the first ball.

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Explain what is relation between magnetic and electricity and why?

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What is the opaque?

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What is the measure of the force of gravity on an object?

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while climbing a hill we bend forward. give a scientific reason for the same

1 Answers   ABC,

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A coil consisting of 200 turns of wire has its ends connected to a circuit such that the total resistance of the coil and the circuit is 2.0 ohm. There is no source of e.m.f. in the circuit. Each turn of the coil is a square of side 18 cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned on. If the field changes linearly from 0 to 0.5 T in 0.8 s, what is the magnitude of the current in the coil while the field is changing?

1 Answers  

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