Advertisements
Advertisements
प्रश्न
What is the current I in the given circuit (Fig. )?
उत्तर
In given circuit, two 2 ohm resistors in series are connected in parallel with another 2 ohm resistor;
Therefore equivalent resistance of the circuit,
R = [(2 + 2-1 + (2)-1]-1
R = `(1/4 + 1/2 = 3/4)`-1
R = `4/3`
I = `"V"/"R" = 3/(4//3) = 9/4` A = 225A
APPEARS IN
संबंधित प्रश्न
Calculate the cost of operating a heater of 500 W for 20 hours at the rate of Rs 3.90 per unit.
Distinguish between kilowatt and kilowatt-hour.
The diagram 31 shows a 3 terminal plug socket.
(i) What is the purpose of the terminal E?
(ii) To which part of the appliance is the terminal E connected?
(iii) To which wire L or N, is the fuse connected and why?
‘The current rating of a fuse is 5A’. Comment on this statement.
Name a metal that is used as an electron emitter. Give one reason for using this metal.
An electric bulb is marked 100 W, 230 V. What does this mean?
At what voltage is the electric power generated at the generating station? Explain the transmission of this power to your house.
An electric iron is rated at 230 V, 750 W. What is its resistance? What maximum current can be passed through it?
An Electric bulb is marked 100 W, 230 V. What how long would this lamp take to consume one unit of electricity?
If a heater coil rated lkW, 220 V is connected in series with an electric bulb of 100 W, 220 V and are supplied 200V, power consumed by the bulb in this circuit is ______.
