Find the amount of current flowing if 2400C charge flows for 2.5min.
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Answers
Explanation:
charge of 12 C passes through the filament of a car headlamp bulb in 4 s. What is the current?
Current = Charge/time = 12/4 = 3 A
2. A current of 0,5 A flows for 20 s through a small electric motor. How much charge has passed?
Charge = Current x time = 0.5 x 20 = 10C
3. A current of 200 mA flows for 2 minutes. How much charge has passed?
Charge = 0.200 x 120 = 24 C
(current in amps, time in seconds)
Answer:
electrons. One electron has a very tiny charge and so for practical measurement of electric charge we use units called COULOMBS.
A coulomb (C) is an AMOUNT of electric charge in just the same way that a litre is an AMOUNT of water.
One coulomb is the charge of roughly six million million million electrons!
The movement of this charge round a circuit is called the electric current.
Electric current is the rate of flow of charge round a circuit. The current at a point in the circuit is the amount of charge that passes that point in one second.
Electric current is measured in AMPERES (AMPS, symbol A).
A current of 1 A is flowing in a circuit if a charge of 1 coulomb passes any point in the circuit every second.
1 Amp = 1 Coulomb per second
We can write this formula as:
Current (I) = Charge (Q) / Time (t)
or
Charge (Q) = Current (I) x Time (t)