Physics · 2013
NEET 2013 · 18 May · Code Y · Q107
Ten identical cells connected in series are needed to heat a wire of length one meter and radius 'r' by 10^° C in time 't'. How many cells will be…
Ten identical cells connected in series are needed to heat a wire of length one meter and radius 'r' by $\displaystyle 10^{\circ} \mathrm{C}$ in time 't'. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time 't' ?
Official answer
(3)
$\displaystyle 20$
More from Current Electricity
- In producing chlorine by electrolysis 100 kW power at 125 V is being consumed. How much chlorine per minute is liberated (E.C.E. of chlorine is 0.367…2010
- The resistance of platinum wire at 0^° C is 2 Ω and 6.8 Ω at 80^° C. The temperature coefficient of resistance of the wire is:2023
- A wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the…2022
- If power dissipated in the 9-Ω resistor in the circuit shown is 36 Watt, the potential difference across the 2-Ω resistor is:2011
- A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used across the potentiometer wire,…2014
- A battery consists of a variable number 'n' of identical cells (having internal resistance 'r' each) which are connected in series. The terminals of…2018
- A copper wire of length 10 m and radius (10^-2 / √π) m has electrical resistance of 10 Ω. The current density in the wire for an electric field…2022
- The current passing through the battery in the given circuit, is:2025
NEET (UG) 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.