Advertisements
Advertisements
प्रश्न
How will you oonnect five resistors, each of the value one ohm, to obtain an equivalent resistance of 0.2 `Omega`
Advertisements
उत्तर
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
संबंधित प्रश्न
An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
(a) 0.92 A
(b) 2.9 A
(c) 9.2 A
(d) 92 A
How does the presence of impurities in a metal affect its resistance?
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
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
In series combination of resistances ______.
To increase the effective resistance in a circuit, the resistors are connected in _______________ .
Answer the following question.
While studying the dependence of potential difference ( V) across a resistor on the current (I) passing through it, in order to determine the resistance of the resistor, a student took 5 readings for different values of current and plotted a graph between V and t. He got a straight line graph passing through the origin. What does the straight-line signify? Write the method of determining the resistance of the resister using this graph.
How does the resistance of an alloy, vary with temperature?
What is the equivalent resistance between the points X and Y for the given network?
