Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Power-voltage rating of an electrical appliance indicates the value of voltage above which the appliance should not be used. It serves as a precaution to the customer and also helps to calculate the maximum value of current that can be safely passed through the appliance.
APPEARS IN
संबंधित प्रश्न
In which direction do electrons flow?
Why should the resistance of:
an ammeter be very small?
An electric bulb of resistance 20 Ω and a resistance wire of 4 Ω are connected in series with a 6 V battery.
Draw the circuit diagram, and calculate:
(a) total resistance of the circuit.
(b) current through the circuit.
(c) potential difference across the electric bulb.
(d) potential difference across the resistance wire.
Find the effective resistance in the following circuit diagrams (Fig.):
Tick (✓) the correct choice among the following :
There are 500 turns and 2000 turns in the primary and secondary coil of a
transformer respectively. If th e output voltage is 1000 V, how large is the
input voltage?
At the time of short circuit, the electric current in the circuit ______.
What determines the direction of flow of electrons between two charged conductors kept in contact?
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
