Two resistors of $3 \Omega$ and $6 \Omega$ are connected in parallel. The equivalent resistance $R$ is:

$(i)$ Draw a circuit diagram to show how two resistors are connected in series.
$(ii)$ In a circuit,if two resistors of $5 \ \Omega$ and $10 \ \Omega$ are connected in series,how does the current passing through the two resistors compare?

What is the highest and lowest total resistance that can be secured by combinations of four coils of resistance $4 \,\Omega, 8 \,\Omega, 12 \,\Omega$ and $24 \,\Omega$?

Which of the following is true for a parallel combination of two resistors?

Study the following circuit and answer the following questions:
$(i)$ State the type of combination of the two resistors in the circuit.
$(ii)$ How much current would flow through:
$(a)$ $10 \, \Omega$ resistor and
$(b)$ $15 \, \Omega$ resistor?
$(iii)$ What would be the ammeter reading?

Two resistors of resistance $2 \,\Omega$ and $4 \,\Omega$ when connected to a battery will have: