Advertisements
Advertisements
प्रश्न
Calculate the effective resistance across AB?
Advertisements
उत्तर
5 Ω and 4Ω are in series
∴ R1 = (5 + 4)Ω = 9Ω
Now, 9Ω and 3Ω are in parallel
`therefore R_2 = (9 xx 3)/(9+3)=9/4Ω`
Now, 2 8Ω and R2 are in series
`therefore R_3 = 8 +9/4 =41/4 Ω= 10.25Ω`
APPEARS IN
संबंधित प्रश्न
The relationship between the potential difference and the current in a conductor is stated in the form of a law.
1) Name the law.
2) What does the slope of V-I graph for a conductor represent?
3) Name the material used for making the connecting wire.
Find the expression for the resistivity of a material and state the SI unit of resistivity.
Fill in the following blank with suitable words:
Resistance is measured in .............. The resistance of a wire increases as the length ..............; as the temperature ..............; and as the cross-sectional area .............. .
What is an ohmic resistor? Give one example of an ohmic resistor. Draw a graph to show its current voltage relationship. How is the resistance of the resistor determined from this graph?
Obtain the macroscopic form of Ohm’s law from its microscopic form and discuss its limitation.
Which of the following is correct for V-I graph of a good conductor?
State Ohm’s law? How can it be verified experimentally? Does it hold good under all conditions? Comment.
Calculate the total resistance of the circuit and find the total current in the circuit.
What is the resistance of a conductor through which a current of 0.5 A flows when a potential difference of 2V is applied across its ends?
How is electric current related to the potential difference across the terminals of a conductor?
Draw a labelled circuit diagram to verify this relationship.
