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प्रश्न
The ratio of the potential difference to the current is known as ________.
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उत्तर
The ratio of the potential difference to the current is known as Ohm’s law.
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संबंधित प्रश्न
A low voltage supply from which one needs high currents must have very low internal resistance. Why?
Name the physical quantity whose unit is "ohm".
Name the law which is illustrated by the above V−I graph.
Fill in the following blank with suitable words:
Resistance is measured in .............. The resistance of a wire increases as the length ..............; as the temperature ..............; and as the cross-sectional area .............. .
An electric bulb draws 1.2 A current at 6.0 V. Find the resistance of filament of bulb while glowing.
A wire of resistance 9 ohm having length 30 cm is tripled on itself. What is its new resistance?
A wire has a length of 2.0 m and a resistance of 5.0 Ω. Find the electric field existing inside the wire if it carries a current of 10 A.
Consider the sacle of voltmeter shown in the diagram and answer the following questions :
(a) What is the least count of the voltmeter?
(b) What is the reading shown by the voltmeter ?
(c) If the voltmeter is connected across a resistor of 20 `Omega` how much current is flowing through the resistor?
Tick(✓) the correct choice in the following:
Ohm's law is applicable to
The variable resistance is called ____________.
