Advertisements
Advertisements
प्रश्न
Write the SI units for:
(a) Electric current
(b) Potential difference
(c) Charge.
Advertisements
उत्तर
(a) Ampere
(b) Volt
(c) Coulomb
APPEARS IN
संबंधित प्रश्न
What is meant by "electric power"?
What does the unit kilowatt hour measure? Define it.
Mention three uses of the carbon arc.
State two advantages of filling an inert gas in an evacuated electric filament lamp.
What would happen and why, to an electric bulb when it is connected across a supply of voltage (i) lower (ii) higher than its proper rating?
I ampere of current is passed through a resistor of resistance R ohm for time t second. Obtain expression for
(i) the electrical energy, and
(ii) the electrical power spent.
A family uses a light bulb of 100W, a fan of 100W, and a heater of 1000W, each for 8 hours a day. If the cost of electricity is Rs. 2 per unit, what is the expenditure to the family per day, on electricity?
Establish the relation that heat produced in a metallic conductor due to the flow of current is V2t/R joules, where V is the potential difference across the ends of the conductor, R its resistance and t is the time in second for which current flows.
1 kWh is equal to:
Using a long extension cord in which each conductor has a resistance of 8Ω, a bulb marked as '100 W, 200 V' is connected to a 220 V dc supply of negligible internal resistance as shown in the figure. The power delivered to the bulb is ______ W.
