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.

State ohm's law. Draw a circuit diagram to establish a relationship between potential difference across the two ends of a resistor and the current flowing through it.

Divya always switched off unwanted lights, fans and electric gadgets when not in use. Comparatively her electricity bill cut down to half:

$\left(a\right)$What is the commercial unit of electrical energy?

 Divya always switched off unwanted lights, fans and electric gadgets when not in use. Comparatively her electricity bill cut down to half:

$\left(b\right)$Suggest any two methods to save electricity?

Divya always switched off unwanted lights, fans and electric gadgets when not in use. Comparatively her electricity bill cut down to half:

$\left(c\right)$ What values does Divya show?

If you connect three resistors having values $20$ ohm, $3$ ohm and $5$ ohm in parallel, then, will the value of the total resistance be less than $20$ ohm or greater than $5$ ohm or lie between $20$ohm and $5$ ohm? Explain.