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प्रश्न
To increase the effective resistance in a circuit, the resistors are connected in _______________ .
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उत्तर
To increase the effective resistance in a circuit, the resistors are connected in series.
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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.
Write any two characteristics of a series combination of resistors.
Find the equivalent resistance between A and B
How does the resistance of a pure metal change if its temperature decreases?
Give one example to show how the resistance depends on the nature of material of the conductor.
Calculate the resistance of an aluminium cable of length 10 km and diameter 2.0 mm if the resistivity of aluminium is 27 × 10−8 Ωm.
Calculate the combined resistance in each case:
The diagram below shows part of a circuit:
If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:
(a) 9 Ω
(b) 4 Ω
(c) 6 Ω
(d) 18 Ω
State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator.
State how are the two resistors joined with a battery when same current flows in each resistor.
What material is used for making wire to prepare heating coils? Give a reason.
State the effect of rise in temperature on the resistance of semi-conductors.
State expression for Resistance connected in series.
Two lamps of resistance 30Ω and 20Ω respectively are connected in series in a 110V circuit. Calculate:
(i) the total resistance in the circuit
(ii) the current in the circuit, and
(iii) the voltage drop across each lamp.
Two wires of same material and same lengths have radii in the ratio of 2 : 3, Compare their resistances.
Consider the following combinations of resistors:
The combinations having equivalent resistance 1 Q is/are ______.
