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 ?
Alloys have higher resistivity in comparison to pure metals.
Similar Questions
Three incandescent bulbs of $100\, W$ each are connected in series in an electric circuit. In another circuit another set of three bulbs of the same wattage are connected in parallel to the same source. Now let one bulb in both the circuits get fused. Will the rest of the bulbs continue to glow in each circuit? Give reason.
Three incandescent bulbs of $100\, W$ each are connected in series in an electric circuit. In another circuit another set of three bulbs of the same wattage are connected in parallel to the same source. Now let one bulb in both the circuits get fused. Will the rest of the bulbs continue to glow in each circuit? Give reason.
A large number of free electrons are present in metals yet no current flows in the absence of electric potential across it. Explain the statement with reason.
A large number of free electrons are present in metals yet no current flows in the absence of electric potential across it. Explain the statement with reason.
Out of the two, a toaster of $1\, kW$ and an electric heater of $2\, kW$, which has a greater resistance ?
Out of the two, a toaster of $1\, kW$ and an electric heater of $2\, kW$, which has a greater resistance ?
When do we say that the resistors are connected in parallel ?
When do we say that the resistors are connected in parallel ?
State reasons for the following
$(a)$ Tungsten is used for making bulb filaments.
$(b)$ Copper and aluminium are generally used for electricity transmission.
$(c)$ Alloys are commonly used in electrical heating devices such as electric iron and toaster.
State reasons for the following
$(a)$ Tungsten is used for making bulb filaments.
$(b)$ Copper and aluminium are generally used for electricity transmission.
$(c)$ Alloys are commonly used in electrical heating devices such as electric iron and toaster.