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A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns…

We need to step-up the voltage for power transmission, so that  (i) the current is reduced and consequently, the `"l&qu…

If the secondary coil has a greater number of turns than the primary, (i) the voltage is stepped-up (Vs >Vp ) and arrange…

Which of the following statement is true?  (i) Energy is created when a transformer steps up the voltage  (ii) A transformer…

A free electron and a free proton are placed between two oppositely charged parallel plates. Both are closer to the positive…

A small object with charge q and weight mg is attached to one end of a string of length ‘L’ attached to a stationary support…

Given below are two statements labelled as Assertion (A) and Reason (R)  Assertion (A):On Increasing the current sensitivity…

Given below are two statements labelled as Assertion (A) and Reason (R)  Assertion(A): A proton and an electron, with same m…

Given below are two statements labelled as Assertion (A) and Reason (R)  Assertion(A): A magnetic needle free to rotate in a…

Given below are two statements labelled as Assertion (A) and Reason (R)  Assertion (A): An electron has a high potential ene…

Given below are two statements labelled as Assertion (A) and Reason (R)  Assertion (A): To increase the range of an ammeter,…

If both the number of turns and core length of an inductor is doubled keeping other factorsconstant, then its self-inductanc…

A circular loop of radius 0.3cm lies parallel to much bigger circular of radius 20 cm. The centre of the small loop is on th…

A sinusoidal voltage of peak value 283 V and frequency 50 Hz is applied to a series LCR circuit in which R = 3 Ω, L = 25.48 …

An air-cored solenoid with length 30 cm, area of cross-section 25 `"cm"^{2}` and number of turns 800, carries a cu…

In a hydrogen atom the electron moves in an orbit of radius 0.5 Ao making 10 revolutions per second, the magnetic moment ass…

Three infinitely long parallel straight current carrying wires A, B and C are kept at equal distance from each other as show…

The current sensitivity of a galvanometer increases by 20%. If its resistance also increases by 25%, the voltage sensitivity…

A 10 m long wire of uniform cross-section and 20 Ω resistance is used in a potentiometer. The wire is connected in series wi…

A straight line plot showing the terminal potential difference (V) of a cell as a function of current (I) drawn from it, is …