Advertisements
Advertisements
प्रश्न
A wire of uniform thickness with a resistance of 27Ω is cut into three equal pieces and they are joined in parallel. Find the equivalent resistance of the parallel combination.
Advertisements
उत्तर
Wire cut into three pieces means new resistance = `27/3` = 9 ohm
Now three resistance connected in parallel :
`1/"R"_"P"=1/"R"_1+1/"R"_2+1/"R"_3=1/9+1/9+1/9`
RP = `9/3` = 3 ohm
संबंधित प्रश्न
What Makes an Electric Current Flow in a Wire?
What is the conventional direction of the flow of electric current? How does it differ from the direction of flow electrons?
Three resistors are connected as shown in the diagram.
Through the resistor 5 ohm, a current of 1 ampere is flowing.
(i) What is the current through the other two resistors?
(ii) What is the p.d. across AB and across AC?
(iii) What is the total resistance
(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:
(i) Total resistance.
(ii) Current shown by the ammeter A
In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.
- A and B
- A and C
State whether the current is a scalar or vector?
Complete the following:
1 kWh = _________ J
What should I choose ___________________
b. for getting protection from electric current.
c. to measure the current in the circuit?
The flow of electric charge per unit time is called potential difference.
What is the rate at which charges flow past a point on a circuit?
