Two identical resistors are connected in series across a battery. If one of the resistors is now short-circuited, the power dissipated in the other resistor will:

Electric power is transmitted over long distances through conducting wires at high voltage because

The neutral temperature {t_n} = 285\,{\,^0}{\rm{C}} is constant for a ${\rm{Cu - Fe}}$ thermocouple. When the cold junction is at 0\,{\,^0}{\rm{C}}, the value of inversion temperature is {t_i} = 570\,{\,^0}{\rm{C}} but if the cold junction is at 10\,{\,^0}{\rm{C}}, the inversion temperature $\left( {{t_i}} \right)$ will be

If an electric current is passed through a nerve of a man, then man

Two electric bulbs have ratings respectively of ${\rm{25}}\,\,{\rm{W, 220}}\,\,{\rm{V}}$ and ${\rm{100}}\,\,{\rm{W, 220}}\,\,{\rm{V}}$. If the bulbs are connected in series with a supply of ${\rm{440}}$, which bulb will fuse?

In a thermocouple, the temperature that does not depend on the temperature of the cold junction is called

The main supply voltage to a room is ${\rm{120}}\,\,{\rm{V}}$. The resistance of the lead wires is ${\rm{6}}\,\,{\rm{\Omega }}$. A ${\rm{60}}\,\,{\rm{W}}$ bulb is already giving light. What is the decrease in voltage across the bulb when a ${\rm{240}}\,\,{\rm{W}}$ heater is switched on?

A uniform wire of length $l$ and radius $r$ has a resistance of $100\,\Omega$ . It is recast into a wire of radius $\frac{r}{2}$. The resistance of new wire will be

Two resistors of $6\,\,{\rm{\Omega }}$ and $9\,\,{\rm{\Omega }}$ are connected in series to a $120\,\,volt$ source. The power consumed by the $6\,\,{\rm{\Omega }}$ resistor is

A lamp having tungsten filament consumes ${\rm{50}}\,\,{\rm{W}}$. Assume the temperature coefficient of resistance for tungsten is 4.5\,\, imes \,\,{10^{ - 3}}\,{\,^0}{C^{ - 1}} and temperature of the surrounding is 20\,{\,^0}C. When the lamp burns, the temperature of its filament becomes 2500\,{\,^0}C , then the power consumed at the moment switch is on, is

Forty electric bulbs are connected in series across a $220\,\,V$ supply. After one bulb is fused, the remaining ${\rm{39}}$ are connected again in series across the same supply. The illumination will be