Advertisements
Advertisements
Question
How will you oonnect five resistors, each of the value one ohm, to obtain an equivalent resistance of 0.2 `Omega`
Advertisements
Solution
Five resistors each of value 1 ohm s hou Id be connected in paral le I to obtain an equivalent resistance of O. 2 ohm.
Equivalent parallel resistance RP = `("Resistance of each resistor"/"No. of resistors") = 1/5 = 0.2 Omega`
APPEARS IN
RELATED QUESTIONS
Judge the equivalent resistance when the following are connected in parallel − (a) 1 Ω and 106Ω, (b) 1 Ω and 103Ω and 106Ω.
If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is :
(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
State how are the two resistors joined with a battery when same current flows in each resistor.
You have three resistors of values 2 `Omega`, 3 `Omega`, and 5 `Omega`. How will you join them so that the total resistance is less than 2 `Omega`?
What do you mean by power rating of an electrical appliance? How do you use it to calculate
(a) the resistance of the appliance and
(b) the safe limit of the current in it, while in use?
How does the resistance of an alloy, vary with temperature?
When a 4 Ω resistor is connected across the terminals of a 2 V battery, the number of coulombs passing through the resistor per second is:
Consider the following combinations of resistors:
The combinations having equivalent resistance 1 Q is/are ______.
