Advertisements
Advertisements
प्रश्न
Ohm’s law states the relationship between power and voltage.
विकल्प
True
False
Advertisements
उत्तर
Ohm’s law states the relationship between power and voltage - false.
Correct Statement:
Ohm’s law states the relationship between potential difference and current.
APPEARS IN
संबंधित प्रश्न
Name the law which is illustrated by the above V−I graph.
The unit of electrical resistance is:
(a) ampere
(b) volt
(c) coulomb
(d) ohm
Define the following:
Coulomb
State the limitations of Ohm’s law.
What are ohmic conductors? Give one exmaple. Draw a graph showing the current-voltage relationship for an ohmic conductor.
The ratio of the potential difference to the current is known as ________.
Calculate the total resistance of the circuit and find the total current in the circuit.
A current of 2amp flowing through a conductor produced 80 joule of heat in 10 sec. The resistance of the conductor is:-
Vinita and Ahmed demonstrated a circuit that operates the two headlights and the two sidelights of a car, in their school exhibition. Based on their demonstrated circuit, answer the following questions.
- State what happens when switch A is connected to:
a) Position 2
b) Position 3 - Find the potential difference across each lamp when lit.
- Calculate the current.
a) in each 12 Ω lamp when lit.
b) In each 4 Ω lamp when lit.
OR - Show, with calculations, which type of lamp, 4.0 Ω or 12 Ω, has the higher power.
