In a large building, there are $15$ bulbs of $40 \mathrm{W}$, $5$ bulbs of $100 \mathrm{W}$, $5$ fans of $80 \mathrm{W}$ and $1$ heater of $1 \mathrm{kW}$. The voltage of the electric mains is $220 \mathrm{V}$. The minimum capacity of the main fuse of the building will be

In the circuit shown below, the current in the $1 \mathrm{\Omega }$ resistor is

A galvanometer having a coil resistance of $100 \mathrm{\Omega }$ gives a full-scale deflection, when a current of $1 \mathrm{mA}$ is passed through it. The value of the resistance, which can convert this galvanometer into an ammeter giving a full-scale deflection for a current of $10 \mathrm{A},$ is 

The temperature dependence of resistance of $\mathrm{Cu}$ and undoped $\mathrm{Si}$ in the temperature range $300-400 \mathrm{K}$ is best-described by

In the above circuit, the current in each resistance is,