Question

Explain the experimental procedure and list out the apparatus of the experiment of “Resitance

increases with the length of the conductor” and discuss precautions​

Answer 1

The experimental procedure for the experiment “Resistance increases with the length of the conductor” is as follows:

• Set up the apparatus as shown below in the circuit diagram.

• Now place one crocodile clip at 0cm on the wire and the other at 5cm to complete the circuit.

• Turn the power pack on and record the voltmeter and ammeter readings.

• Switch off the power pack, move the crocodile clip by few cms and record the readings again.

The apparatus required for the experiment are:

• 1 ammeter and 1 voltmeter

• 5 wires

• 2 crocodile clips

• A Powerpack

• Nichrome wire(100 cm)

The precautions to be taken while doing this experiment are:

• Ensure that all the wires are connected properly.

• Ensure that insulation on the wires is not worn.

• Ensure that the power is isolated by means of a switch and an L.E.D