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प्रश्न
How would you connect two resistors in series? Draw a diagram. Calculate the total equivalent resistance.
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उत्तर
If current I is drawn from the battery, the current through each resistor will also be I.
On applying Ohm's law to the two resistors separately, we further
have
`"V"_1 = "I R"_1`
`"V"_2 = "I R"_2`
`"V" = "V"_1 + "V"_2`
`"IR" = "I R"_1+ "I R"_2`
`"IR" = "I " ["R"_1+ "R"_2]`
`"R" = "R"_1+ "R"_2`
Total Resistance in series R
`"R" = "R"_1+"R"_2+"R"_3`
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संबंधित प्रश्न
Is Ohm’s law universally applicable for all conducting elements? If not, give examples of elements which do not obey Ohm’s law.
What is Resistivity?
The unit of electrical resistance is:
(a) ampere
(b) volt
(c) coulomb
(d) ohm
State Ohm’s law and draw a neat labelled circuit diagram containing a battery, a key, a voltmeter, an ammeter, a rheostat and an unknown resistance to verify it.
What is the necessary condition for a conductor to obey Ohm’s law?
What is non-ohmic resistor?
State microscopic form of Ohm’s law.
State macroscopic form of Ohm’s law.
What is ohmic device?
The resistance of a resistor is reduced to half of its initial value. If other parameters of the electrical circuit remain unaltered, the amount of heat produced in the resistor will become ______.
