Page 8 - 10-phy-14 Current Electricity
P. 8
Post Lab. 1. Festive lights used for building decorations are made by connecting
Activities 2. many small bulbs in series. If one of the bulbs gets fused, would the
others continue to glow? Explain the reason.
________________________________________________________
________________________________________________________
Select any two suitable resistors of known values and join them in series
by using the apparatus given in experiment No.14.2 .2 to make an electric
circuit. Find the equivalent resistance of the resistors experimentally and
then compare it with its value calculated theoretically.
________________________________________________________
________________________________________________________
3. A high resistance of 12000W is
connected in series with a
galvanometer to form a voltmeter. If 12000W
the resistance of the voltmeter is
12150W, what is the resistance of the G
galvanometer?
Voltmeter
________________________________________________________
4. ________________________________________________________
Why is the resistance of a long wire greater than that of a shorter one
5. of the same thickness and material?
________________________________________________________
BRAIN TEASER
Six bulbs are connected in ________________________________________________________
series in a circuit. If two
more bulbs are added in Consider the given circuit. +-
series with them, what will
be the effect on the Ammeter A1 shows 0.5A Key Power Supply
brightness of the bulbs current. What is the
now? How will be the
current affected? Give Acurrent passing through 1 A2
reason.
the bulb and what
reading is shown by
ammeter A2?
________________________________________________________
________________________________________________________
37
Activities 2. many small bulbs in series. If one of the bulbs gets fused, would the
others continue to glow? Explain the reason.
________________________________________________________
________________________________________________________
Select any two suitable resistors of known values and join them in series
by using the apparatus given in experiment No.14.2 .2 to make an electric
circuit. Find the equivalent resistance of the resistors experimentally and
then compare it with its value calculated theoretically.
________________________________________________________
________________________________________________________
3. A high resistance of 12000W is
connected in series with a
galvanometer to form a voltmeter. If 12000W
the resistance of the voltmeter is
12150W, what is the resistance of the G
galvanometer?
Voltmeter
________________________________________________________
4. ________________________________________________________
Why is the resistance of a long wire greater than that of a shorter one
5. of the same thickness and material?
________________________________________________________
BRAIN TEASER
Six bulbs are connected in ________________________________________________________
series in a circuit. If two
more bulbs are added in Consider the given circuit. +-
series with them, what will
be the effect on the Ammeter A1 shows 0.5A Key Power Supply
brightness of the bulbs current. What is the
now? How will be the
current affected? Give Acurrent passing through 1 A2
reason.
the bulb and what
reading is shown by
ammeter A2?
________________________________________________________
________________________________________________________
37
