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
When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
How much energy is consumed when a current of 5 amperes flows through the filament (or element) of a heater having resistance of 100 ohms for two hours? Express it in joules.
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?
How would you connect two resistors in series? Draw a diagram. Calculate the total equivalent resistance.
State the relation correlating the electric current flowing in a conductor and the voltage applied across it. Also, draw a graph to show this relationship.
What are ohmic conductors? Give one exmaple. Draw a graph showing the current-voltage relationship for an ohmic conductor.
Draw a neat diagram for the verification of Ohm’s law by voltmeter-ammeter method. By another diagram show the relation between p.d. and current.
The slope of voltage (V) versus current (I) is called:

A current of 2amp flowing through a conductor produced 80 joule of heat in 10 sec. The resistance of the conductor is:-
What is meant by resistance of a conductor ? Define its SI unit.
