Ohms law

1. OHM’S LAW

2. WHAT ISOHM’S LAW ?
• OHM’S LAW IS A FORMULAUSEDTO CALCULATE THERELATIONSHIPBETWEENVOLTAGE,
CURRENTAND RESISTANCEIN AN ELECTRICALCIRCUIT.
• STATEMENT:- OHM’S LAW STATESTHATTHECURRENTTHROUGHA CONDUCTORBETWEEN
TWO POINTSIS DIRECTLYPROPORTIONALTO THEVOLTAGEACROSSTHETWO POINTS.
THEREFORE,V= RIWHERERIS A CONSTANTCALLED RESISTANCE.RDEPENDSON THE
DIMENSIONSOF THECONDUCTOR AND ALSO ON THEMATERIALOF THECONDUCTOR. ITSSI
UNIT ISOHM.

3. CIRCUITDIAGRAM

4. MATHEMATICEXPRESSION
• OHMS LAW—“AT CCURRENTTEMPERATURECURRENTIS DIRECTLYPROPORTIONALTO ITS
POTENTIALDIFFERENCE.”
• MATHEMATICALEXPRESSIONON CAN BEGIVENAS…
1. V = IRWHEREV REPRESENTSPOTENTIALDIFFERENCE;
2. I REPRESENTSCURRENT.
3
. R= RESISTANCECONSTANT.

5. My Moltøge
O Oesfis

6. TWO TYPESOF CIRCUITCONNECTIONS.
• SERIESCONNECTION
• PARALLELCONNECTION

7. KIRCHOFFSCURRENTLAW (KCL)
• “THEALGEBRAICSUM OFALL CURRENTSENTERINGAND EXITING A NODE MUSTEQUALZERO.”
∑ I = 0

8. KIRCHOFFSVOLTAGE LAW (KVL)
• THEALGEBRAICSUMOF ALL VOLTAGE DIFFERENCESAROUNDANY CLOSEDLOOPIS ZERO.
∑V = 0

9. THANK YOU
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