Advertisements
Advertisements
प्रश्न
Four resistors each of resistance 5 Ω are connected in parallel. What is the effective resistance?
Advertisements
उत्तर
Effective Resistance = `1/"R"`
= `1/5 + 1/5 + 1/5 + 1/5`
`1/"R" = 4/5`
∴ R = `5/4`
= 1.25 Ω
APPEARS IN
संबंधित प्रश्न
Complete the following :-
(c)
How many 176 Ω resistors (in parallel) are required to carry 5 A on a 220 V line?
A combination consists of three resistors in series. Four similar sets are connected in parallel. If the resistance of each resistor is 2 ohm, find the resistance of the combination.
An electrical appliance has a rating 100 W, 120V. The resistance of element of appliance when in use:
A current of 2 A is passed through a coil of resistance 75 Ω for 2 minutes.
(a) How much heat energy is produced?
(b) How much charge is passed through the resistance?
A given wire is stretched to double its length. How will its resistance change?
In the figure below, the ammeter A reads 0.3 A. Calculate:
(i) the total resistance of the circuit
(ii) the value of R
(iii) the current flowing through R.
Calculate the current flows through the 10 Ω resistor in the following circuit.
Three resistors of 6Ω, 4Ω and 4Ω are connected together so that the total resistance is 8Ω. Draw a diagram to show this arrangement and give reason to justify your answer.
You have three resistors of values 2 Ω, 3 Ω, and 5 Ω. How will you join them so that the total resistance is less than 1 Ω? Draw a diagram and find the total resistance.
