Study the following circuit and answer the following questions:

$\left(ii\right)$How much current is following through $15 \mathrm{\Omega }$  resistors.

Study the following circuit and answer the following questions:

$\left(iii\right)$ What is the ammeter reading.

What will be the reading of the ammeter in figure, when

(i) Key ${\mathrm{K}}_1$ is closed  and ${\mathrm{K}}_2$ is open

What will be the reading of the ammeter in figure, when

$\left(ii\right)$ Both keys ${\mathrm{K}}_1$ and ${\mathrm{K}}_2$ are closed.

What is meant by saying that the potential difference between two points is $1$ volt? Name a device that helps to measure the potential difference across a conductor.

Why does the conducting cord of an electric heater does not glow hot while the heating element does?

Two bulbs rated $100 \mathrm{W}$ and $200 \mathrm{W}$ are rated at $220$ volt are connected in series to a $220$ volt supply. Find current through each bulb and total power consumed.

 The statement that is most correct about the following circuit is: