Advertisements
Advertisements
प्रश्न
Which of the following is an ohmic resistance?
विकल्प
LED
Junction diode
Filament of a bulb
Nichrome wire
Advertisements
उत्तर
Nichrome wire
Hint: Substances that obey Ohm's law are called Ohmic resistors.
APPEARS IN
संबंधित प्रश्न
Find the resistance of a conductor if 0.24 A current is passing through it and a potential difference of 24 V is applied across it.
Is Ohm’s law universally applicable for all conducting elements? If not, give examples of elements which do not obey Ohm’s law.
Write the formula of resistivity
Ohm's law gives a relationship between:
(a) current and resistance
(b) resistance and potential difference
(c) potential difference and electric charge
(d) current and potential difference
The graph between V and I for a conductor is a straight line passing through the origin.
What should remain constant in a statement of this law?
The resistors R1, R2, R3 and R4 in the figure given below are all equal in value.
What would you expect the voltmeter A, B and C to read assuming that the connecting wires in the circuit have negligible resistance?
- Draw a V-I graph for a conductor obeying Ohm’s law.
- What does the slope of V–I graph for a conductor represent?
The variable resistance is called ____________.
What is the resistance of a conductor through which a current of 0.5 A flows when a potential difference of 2V is applied across its ends?
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.
