state ohms law and describe an activity to verify ohms law.
Answers
Statement of Ohm's Law: Ohm's law states that at a constant temperature, current 'I' through a conductor between two points is directly proportional to the potential difference or voltage 'V', across the two points. That is, ... This constant is called as the resistance (R) of the conductor.
Heya!
OHM'S LAW :
>>"George SimonOhm"proposed the Ohm's law
>>Ohm's law states that,"Thepotential difference at the ends of the conductor is directly proportinal to amount of current flowing through it,at constant temperature"
>>Simply...It can be defined as,"If the potential difference increases,then the flow of current also increases and vice versa.
>>As we know,Potential Diff.isdenoted by"V"and Current is denoted by "I"
>>Ohm's laws result is..V/Ivalue is constant,at constant Temp.
>>It can be verified..by performing theexperiment.
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Material required :
battries of 1.5V, Conducting wires, iron spoke, LED bulb, ammeter, volt meter,
Procedure:
• Arrange the circuit as shown in the attachment.
• Connect the battery..and note the values of I and V in a table.
• Connect 2, 3, 4 and 5 battries and note the values of I and V in each case.
• Observe the temp. of spoke
• Next find the value of V/I in each case
• Now, remove the Iron spoke and connect the LED.
• Do the same..by connecting battries and note the values
• observe the temp. of LED
• Next find the value of V/I in each case.
• Draw the graphs..for the both iron spoke and LED cases and observe
Observation :
It will observed that the, V/I value is constant for IRON SPOKE..but, it isn't for lED
Also, the Temp. of Spoke is constant. But, the temp. of LED is not constant!
The graph of the values of I and V of spoke is linear..but, it is not linear for LED.
Result :
The constant valueofV/I..indicates that,the potential diff.is directly proportinal to Current!
Hope it helps u!
