Advertisements
Advertisements
प्रश्न
What is the current in the circuit shown (Fig. )

Advertisements
उत्तर
Given, potential difference, V = 2 volt
Let R be the equivalent resistance of the circuit and I be the current flowing through it; then
R = `[(1/2 + 1/2)^-1+ (1)]`
R = [1 + 1] = 2 Ω
`therefore "I" = "V"/"R" = 2/2` = 1 A
APPEARS IN
संबंधित प्रश्न
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.
How many joules are there in one kilowatt-hour?
Which of the following is the most likely temperature of the filament of an electric light bulb when it is working on the normal 220 V supply line?
(a) 500°C
(b) 1500°C
(c) 2500°C
(d) 4500°C
Two lamps, one rated 220 V, 50 W and the other rated 220 V, 100 W, are connected in serieswith mains of 220 V. Explain why does the 50 W lamp consume more power
Of the three connecting wires in a household circuit: Which two of the three wires are at the same potential? In which of the three wires should the switch be connected?
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
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?
An electric iron is rated at 230 V, 750 W. What is its resistance? What maximum current can be passed through it?
Find the cost of operating an electric toaster for two hours if it draws 8 A current on a 110 volt circuit. The cost of electrical energy is Rs. 2.50 per kWh.
