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प्रश्न
Which of the following is an ohmic resistance?
विकल्प
LED
Junction diode
Filament of a bulb
Nichrome wire
उत्तर
Nichrome wire
Hint: Substances that obey Ohm's law are called Ohmic resistors.
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संबंधित प्रश्न
The unit of electrical resistance is:
(a) ampere
(b) volt
(c) coulomb
(d) ohm
Define the following:
(i) Coulomb
(ii) Ohm
- Name and state the law which relates the potential difference and current in a conductor.
- What is the necessary condition for a conductor to obey the law named above in part (a) ?
State the limitations of Ohm’s law.
The variable resistance is called ____________.
Let the resistance of an electrical device remain constant, while the potential difference across its two ends decreases to one fourth of its initial value. What change will occur in the current through it? State the law which helps us in solving the above stated question.
How is electric current related to the potential difference across the terminals of a conductor?
Draw a labelled circuit diagram to verify this relationship.
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.
