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Physics
Charge and Current
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Created by
Yusuf Ali
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Cards (9)
What is the unit of electric charge?
Coulombs
(
C
)
What does electric charge represent in a circuit?
It is the amount of electricity flowing around a circuit.
How is current defined in terms of electric charge?
Current
(
I
)
is the flow of electric charge.
What is the unit of current?
Amperes
(
A
)
What is the formula for calculating current?
The formula
is
I
=
I =
I
=
Q
t
\frac{Q}{t}
t
Q
, where
I is current
,
Q
is
charge
, and t is
time.
What does the variable 't' represent in the current formula?
't' represents time in seconds.
In which direction is current considered to flow in a circuit?
Current is considered to flow from the positive side of the battery to the negative side.
What is the actual flow of electrons in a circuit compared to the direction of current?
Electrons actually flow in the opposite direction of the current.
What are the key concepts related
to
electric charge and current?
Electric charge
(
Q
)
is measured in coulombs
(
C
).
Current
(
I
)
is the flow of electric charge
,
measured in amperes
(
A
).
Formula for current
:
I
=
I =
I
=
Q
t
\frac{Q}{t}
t
Q
.
Current flows from positive
to
negative in circuits
,
while electrons flow the opposite way.