Question

State three important precautions being followed by you while studying the dependence of potential difference across a resistor on the current passing through it.

Answer 1

length of conductor and thickness . area of cross section

Answer 2

Heyaa mate,
The expt is to verify Ohm's law. i.e. V = IR

● Precautions -
- Copper wire should be used for connection with insulation removed at ends.
- Remember to connect voltmeter in parallel and ammeter in series.
- Avoid passing current through wire for long time az it may produce heat.
- Resistance of rheostat must be minimal.
- Before start of expt, zero pointer of ammeter & voltmeter must be confirmed.


Hope this helped you...