Advertisements
Advertisements
Question
Advertisements
Solution
We know that,
P=VI
I = `"P"/"V" = (5 xx 1000)/200` = 25A
Thus, safe limit of current through t he appliance is 25A and a fuse of rating BA cannot be used with an appliance of rating SkW, 200 v.
APPEARS IN
RELATED QUESTIONS
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?
Why should the resistance of:
a voltmeter be very large?
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 0.12 Ω. How much current would flow through the 12 Ω resistor?
Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
How can you change the brightness of the lamp?
A given wire of resistance 1 Ω is stretched to double its length. What will be its new resistance?
Define the following:
Semiconductors
For current to flow, one needs art open circuit.
Find the odd one out.
Loudspeaker, Bar magnet/magnet, Electric motor, Microphone.
