ELECTRIC FIELD
CONTENT
- Electric Current
- Electric Circuit
- Potential Difference
- Electromotive Force
- Resistance
- Types of Resistors
- Sources of Electric Current
- Arrangement of Resistors
- Ohm’s Law
- Calculations
Electric Current
Definition of Electric Current
Electric current (l) is defined as the time rate of flow of electric charge along a conductor.
\(I = \frac{Q}{t}\)
Q is the quantity of charge measured in Coulomb, ‘t’ is the time in second . I is the current in Ampere(A).There are submultiples of Ampere
1mA = 10-3A
1μA = 10-6A
Ammeter is an instrument used for measuring current. The electric symbol for ammeter is
Milliameter measures smaller current.
Galvanometer are used to detect very small current.
Electric Circuit
Definition of Electric Circuit
An electric circuit is the path provided for the flow of electric current.
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