a) What is the resistance of a conductor? Mention the factors on which the resistance of a conductor depend.
b) b) An electric bulb of `200 Omega ` draws a current of 1 ampere. Calculate the power of the bulb the potential difference at its ends and the energy in KWh consumed burning it for 5h.

Explanation

a) Resistance of a conductor is the property of a conductor by virtue of which it opposes the flow of current through it. The resistance of the conductor depends i) on its length ii) on its area of cross section and ii) on the nature of its materials.
b) Power of the bulb
Power of the bulb, `P = I^2 R = (1)^2 xx 200`
`P = 200 W`
Energy consumed by bulb in 5h in burning.
= Power x Time
= 200 x 5
= 1000 wh = 1 kwh.