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
Define watt. Write down an equation linking watts, volts and amperes.
Distinguish between kilowatt and kilowatt-hour.
An electric bulb is rated ‘100 W, 250 V’. What information does this convey?
An electric bulb is rated 250 W, 230 V. Calculate:
- the energy consumed in one hour
- the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.
Fig . shows the essent ial features of a battery operated bell. The hammer strikes the gong when the swi tch is closed . State and explain the effect of using the following material successively to form the core.

(a) Plastic
(b) Steel
(c) Copper
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?
How does the heat produced by die passage of current in a metallic wire depend on the time of passage of current in the wire?
With reference to the diagram shown below calculate:

(i) The equivalent resistance between P and Q.
(ii) The reading of ammeter.
(iii) The electrical power between P and Q.
1 kWh is equal to:
