YASH CLASSES
CURRENT
ELECTRICITY
1. An
electric iron has 1500W, 220V written
on it. What does this specify?
2.state and define the S.I.
unit of electric
potential difference ?
3. state and define the S.I. unit of
electric
current ?
4. state
and define the S.I. unit of resistance?
5.A
cell is connected to a bulb which develop
p.d. of 12V across it . the current in circuit
is
measure to be 2 A. Find the resistance
offered
by the filament of bulb to the current
6.A
cell is connected to a bulb which develop
p.d. of 20 V across it . the current in
circuit
is
measure to be 2.5 A. Find the
resistance
offered by the filament of bulb to the current
7.A
cell is connected to a bulb which develop
p.d. of 24V across it . the current in circuit
is
measure to be 5.5 A. Find the
resistance
offered by the filament of bulb
to the current
8. What
amount of work is needed in moving
12C
charge through a p.d. of 8.5 V?
9. What
amount of work is needed in moving
2.5C
charge through a p.d. of 7.5 V?
10. What amount of work is needed in
moving
1.2C
charge through a p.d. of 24 V?