Question

with activities OR
Verify Ohm's Law. Explain resistance and resistivity with the help of
Ohm's Law
also explain the factors on which resistance and resistivity depend
SENCE​

Answer 1

Explanation:

ohms law at a constant temp the current glowing in the wire is directly proportional to the principal.d applied

Answer 2

Explanation:

VERIFYING OHM'S LAW - EXAMPLE

Let resistance used for verification be R. Make a circuit of R, voltmeter and ammeter measuring voltage and current through R, rheostat (variable resistor), and a cell. Connect the components properly. Note down values of voltage and current shown by voltmeter and ammeter. Repeat the above for different values of Rheostat. Record data in a tabular format and calculate

v/i for each case. Its should be approximately same. Plot V v/s I on a graph paper. A straight line is obtained whose slope equals resistance.

FACTORS ON WHICH THE RESISTANCE OF A CONDUCTOR DEPENDS ARE:

• Length of wire
• Cross section area or thickness of wire
• Nature of the material
• Temperature resistance of wire is directly proportional to length and temperature and inversely proportional to cross section area.

hope it helps you...