Why alloys are used to make standard resistors ?
Why alloys are used to make standard resistors ?
This is because there is a negligible change in the resistance of an alloy with the change in temperature.
Similar Questions
Define resistance of a conductor. State the factors on which resistance of a conductor depends. Name the device which is often used to change the resistance without changing the voltage source in an electric circuit.
Calculate the resistance of $50 \,m$ length of wire of cross $-$ sectional area $0.01$ square $m m$ and of resistivity $5 \times 10^{-8}\, \Omega m$
Define resistance of a conductor. State the factors on which resistance of a conductor depends. Name the device which is often used to change the resistance without changing the voltage source in an electric circuit.
Calculate the resistance of $50 \,m$ length of wire of cross $-$ sectional area $0.01$ square $m m$ and of resistivity $5 \times 10^{-8}\, \Omega m$
Two identical resistors, each of resistance $2 \Omega$, are connected in turn : $(i)$ in series, and $(ii)$ in paralle to a battery of $12 ,V$. Calculate the ratio of power consumed in the two cases.
Two identical resistors, each of resistance $2 \Omega$, are connected in turn : $(i)$ in series, and $(ii)$ in paralle to a battery of $12 ,V$. Calculate the ratio of power consumed in the two cases.
$1\;kWh =\ldots\ldots$ $joule$
$1\;kWh =\ldots\ldots$ $joule$
How does the resistivity of alloys compare with those of pure metals from which they may have been formed ?
How does the resistivity of alloys compare with those of pure metals from which they may have been formed ?
What will happen to the current flowing through a conductor, if the potential difference is doubled ?
What will happen to the current flowing through a conductor, if the potential difference is doubled ?