Pradeep Paul, R Parthasarthy and, Basha Solutions for Chapter: Electricity, Exercise 2: PAPER-PEN TEST : 2

Draw the symbol of a variable resistance.

Draw the symbol of a battery of four cells.

Draw the symbol of an open switch.

Draw the symbol of a closed switch.

Define the term circuit diagram.

If a potential difference across a bulb is $12 \mathrm{V}$, then how many joules of electrical energy are changed into heat and light when a charge of $1$ coulomb passes through it?

Give the relation between electric charge, electric current and time.

If a TV set draws a current of $0.36 \mathrm{A}$ for $15 \min$, then calculate the amount of electric charge that flows through the circuit.