YASH CLASSES
4. ELECTRIC CURRENT
34. Calculate the current in a wire
if a charge of 1500 C flows
through it in 5 minutes .
35. Calculate the current in a
wire if a charge of 1800 C flows
through it in 25 minutes .
36. Calculate the current in a
wire if a charge of 2000 C flows
through it in ½ hour.
37. When the
charge is infinity
than p.d. is?
38. Write the name
of electric symbols
in the circuit
diagram .
39. Write the ohm’s law ?
40.
Define electric resistance .
write its S.I. unit.
41. Name the device used to change the
resistance of
a circuit .
42. What is the resistance
in
a. an air gap b. closed plug keys
43. What happens when
an ammeter is
placed in parallel in circuit
with resistance ?
44. Why should volt meter
is high resistance
?
45. If a current is flows
in wire is 3A and resistance of the wire is 9
ohm find p.d.
46. If a current
is flows in wire
is 5A and resistance of
the wire is 10ohm find p.d.