CBSE Class 10 Science 2020 · Paper 31/C/1 · Question 17(a)
Draw a labelled diagram of the set-up of a circuit to show that metals are good conductors of electricity.
Answer
The bulb glows when a metal is connected between A and B in the circuit, showing that metals are good conductors.
Labelled diagram: a battery (two cells), a switch, a bulb and connecting wires joined in one closed loop, with a gap between two terminals A and B; the metal to be tested, for example a strip of iron, copper or aluminium, is clipped between A and B so that it completes the circuit. When the switch is closed the bulb glows, showing that electric current flows through the metal: metals are good conductors of electricity.
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