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प्रश्न
Give the law of combination of resistances in series.
उत्तर
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संबंधित प्रश्न
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
Find the expression for resistors connected in series.
Name the material which is the best conductor of electricity.
How does the resistance of a wire change when:
its length is tripled?
What is (a) highest, and (b)Ω lowest, resistance which can be obtained by combining four resistors having the following resistances?
4 Ω, 8 Ω, 12 Ω, 24 Ω
State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator.
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?
When do you say that the resistors are connected in this way? Draw a circuit diagram.
Name the material of wire used for making standard resistances. Give a reason.
You are provided with three resistors of resistance 1.0 Ω, 2.0 Ω and 3.0 Ω How would you connect them to obtain the total effective resistance 1.5 Ω? Draw diagram of the arrangement and check it by calculations.
