Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Given , Np = 800 , Ns = 8,Ep = 220V, Es=?
We know that for a step-down transformer,
`"N"_"s"/"N"_"p" = "E"_"s"/"E"_"p"`
`"E"_"s" = "N"_"s"/"N"_"p" xx "E"_"p" = 8/800 xx 220 = 2.2 "V"`
APPEARS IN
संबंधित प्रश्न
Which particles constitute the electric current in a metallic conductor?
What is the current in a circuit if the charge passing each point is 20 C in 40 s?
Which instrument is used to measure electric current? How should it be connected in a circuit?
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.
Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:
(b) for lighting inside the rooms of the hotel?
If the current passing through a conductor is doubled, what will be the change in heat produced
Complete the following sentence:
A fuse is a short piece of wire of high ......... and low
State the condition when it is advantageous to connect cells in parallel.
