Page 4 - 10-phy-14 Current Electricity
P. 4
Conclusions
Post Lab. 1. A switch can act both as a conductor and as an insulator. Comment on
Activities the statement..
____________________________________________________
2. ____________________________________________________
Determine the value of resistance R of the conductor from graph
DO YOU KNOW? drawn for nichrome wire
Most of the devices like 3. ____________________________________________________
fluorescent tube, energy
saver, electrical bulb and ____________________________________________________
electrolytes do not obey Connect a 6V bulb in the circuit in place of nichrome wire. Take five
Ohm's law. They are called reading of V & I. Draw V versus I graph. Does it verify Ohm's Law?
non-ohmic conductors. Give reason
4. ____________________________________________________
____________________________________________________
Repeat the above experiment by using nichrome wire of double the
length. Draw its V-I graph on the same graph paper. What do the two
different straight lines show with reference to the slope? Can you tell
which of the two wires has greater resistance?
____________________________________________________
____________________________________________________
BRAIN TEASER V C
1. What does this graph indicate? A B
(i) From A to B
(ii) From B to C I
(iii) Name the device which follows
this graph.
33
Post Lab. 1. A switch can act both as a conductor and as an insulator. Comment on
Activities the statement..
____________________________________________________
2. ____________________________________________________
Determine the value of resistance R of the conductor from graph
DO YOU KNOW? drawn for nichrome wire
Most of the devices like 3. ____________________________________________________
fluorescent tube, energy
saver, electrical bulb and ____________________________________________________
electrolytes do not obey Connect a 6V bulb in the circuit in place of nichrome wire. Take five
Ohm's law. They are called reading of V & I. Draw V versus I graph. Does it verify Ohm's Law?
non-ohmic conductors. Give reason
4. ____________________________________________________
____________________________________________________
Repeat the above experiment by using nichrome wire of double the
length. Draw its V-I graph on the same graph paper. What do the two
different straight lines show with reference to the slope? Can you tell
which of the two wires has greater resistance?
____________________________________________________
____________________________________________________
BRAIN TEASER V C
1. What does this graph indicate? A B
(i) From A to B
(ii) From B to C I
(iii) Name the device which follows
this graph.
33
