Conductors develop electric currents in them

A power transmission line feeds input power at 2400 V to a step-down transformer with its primary windings having 5000 turns. The output power is delivered at 240 V by the transformer. If the current in the primary coil of the transformer is 5 A and its efficiency is 95% then the current in the secondary will be:

A moving hydrogen atom absorbs a photon of wavelength 221 nm and stops. If the mass of the hydrogen atom is \(1.67 \times 10^{-27} \text{ kg}\), the linear momentum of the photon will be: (Given: \(h = 6.63 \times 10^{-34} \text{ J}⋅­­s\))

In a series LCR circuit, the voltage across \(R\) is \(200 V, C=5 \mu F\), and \(R=2 k \Omega\). The resonant frequency \(\omega\) is \(1 0 0 ~ r a d / s\). At resonance, the voltage across \(L\) is:

The electromagnetic radiation used to kill germs in water purifiers is

The mutual inductance of two co-axial coils is 2 H. If the current in one coil changes uniformly from zero to 1.0 A in 100 ms, the emf induced in the other coil is

Electromagnetic wave travels with speed of \(2.0 \times 10^8 m / s\) in any medium of relative permeability ( \(\mu_r\) ) 1.5. Find the relative permittivity of the medium ( \(\epsilon_r\) )

The reverse osmosis occurs when

The term of the perpetuity is:

Alcohol is a depressant, which means that even small amounts of alcohol slow down the actions of parts of the brain, so alcohol lengthens the time you take to respond to a stimulus.
Different people react differently to alcohol. In some people, it increase their feelings of aggression, and releases their inhibitions so that they are more likely to be violent or commit other crimes.
An alcoholic needs to drink quite large quantities of alcohol regularly. This causes many parts of the body to be damaged, because alcohol is poisonous to cells. Probably, there are many factors which decide whether or not a person becomes alcoholic. Over a long period of time, it can cause loss of memory and confusion. One way in which the damage is done is that alcohol in the body fluids draws water out of cells by osmosis.
Effect of alcohol on cells is -

A diode having potential difference 0.5 V across its junction which does not depend on current, is connected in series with a resistance of \( 20 \Omega \) across a source. If 0.1 A current passes through the resistor, the voltage across the source is :

On differentiating \(e^{x^2}\) with respect to x, we get

Which Assisted Reproductive Technology (ART) is more suitable when the male partner has low sperm count?