Will the drift speed of free electrons in a metallic conductor increase or decrease with increase in temperature?

Why are the coils of electric toasters and electric irons made of an alloy rather than a pure metal?

An electric lamp of $100 \mathrm{\Omega }$, a toaster of resistance $50 \mathrm{\Omega }$, and a water filter of resistance $500 \mathrm{\Omega }$ are connected in parallel to a $220 \mathrm{V}$ source. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances, and what is the current through it?

  What is the shape of the graph obtained by plotting potential difference applied across a conductor against the current flowing through it?

What does the slope of this $\mathrm{V}-\mathrm{I}$ graph at any point represent?

Draw a schematic diagram of a circuit consisting of a battery having five $2 \mathrm{V}$ cells, a $5$ ohm resistor, a $10$ ohm resistor and a $15$ ohm resistor and a plug key, all connected in series.

Draw a schematic diagram of a circuit consisting of a battery having five $2 \mathrm{V}$ cells, a $5$ ohm resistor, a $10$ ohm resistor and a $15$ ohm resistor and a plug key, all connected in series. Calculate the electric current passing through the above circuit when the key is closed.

How is the direction of electric current related to the direction of flow of electrons in a wire?

Calculate the current in a circuit if $500$ coulomb of charge passes through it in $10$ minutes.