Advertisements
Advertisements
प्रश्न
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
Advertisements
उत्तर
Given 250 V, I = ?
∵ P = VI
⇒ 100 = 250 × I
∴ I = `100/250 = 0.4` Amp.
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use:
Ammeter.
Three 2 V cells are connected in series and used as a battery in a circuit.
What is the p.d. at the terminals of the battery?
How many milliamperes as there in 1 ampere?
Consider the circuit given below:
(a) In which circuit are the lamps dimmest?
(b) In which circuit or circuits are the lamps of equal brightness to the lamps in circuit (i)?
(c) Which circuit gives out the maximum light?
An electric bulb is rated '100 W, 250 V'. How much current will the bulb draw if connected to a 250 V supply?
State whether the following statement is True or False:
The SI unit of charge is the coulomb.
State the condition when it is advantageous to connect cells in parallel.
A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
Problems for practice:
If 5A current flows through a circuit, then convert the current in terms of microampere?
