Advertisements
Advertisements
प्रश्न
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
Calculate the number of electrons constituting one coulomb of charge.
Which particles constitute the electric current in a metallic conductor?
A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?
In the circuit diagram given below, three resistors R1, R2, and R3 of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown
Calculate:
- current through each resistor.
- total current in the circuit.
- total resistance in the circuit.
If you were going to connect two light bulbs to one battery, would you use a series or a parallel arrangement? Why? Which arrangement takes more current from the battery?
Name two devices which work on the heating effect of electric current.
Draw a schematic diagram of an electric circuit consisting of a battery of two cells each of 1.5 V, 5 Ω, 10 Ω and 15 Ω resistors and a plug key, all connected in series.
Two resistors of 4 Ω and 6 Ω are connected in parallel. The combination is
connected across a 6 volt battery of negligible resistance. Calculate:
( i) The power supplied by the battery,
(ii) The power dissipated in each resistor.
Find the effective resistance in the following circuit diagrams (Fig.):
A geyser is rated 1500 W, 250 V. This geyser is connected to 250 V mains. Calculate:
- The current drawn,
- The energy consumed in 50 hours, and
- The cost of energy consumed at ₹ 4.20 per kWh.
State the conditions for the flow of charge in a circuit from one point to the other.
Unit of electric power may also be expressed as
Electric current is defined as:
The electron was discovered in 1897 by:
