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
In which direction does conventional current flow around a circuit?
In which direction do electrons flow?
What is the current in a circuit if the charge passing each point is 20 C in 40 s?
If the charge on an electron is 1.6 × 10−19 coulombs, how many electrons should pass through a conductor in 1 second to constitute 1 ampere current?
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(b) In which circuit, if one bulbs be brighter?
Consider the circuit given below when A, B and C are three identical light bulbs of constant resistance. 
(a) List the bulbs in order of increasing brightness.
(b) If C burns out, what will be the brightness of A now compared with before?
(c) If B burns out instead, what will be the brightness of A and C compared with before?
Complete the following sentence:
A fuse is connected in ........... with the ......... wire.
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
True or False – If False give the correct answer
The representation of the electric current is A
The number of electrons constituting a 1-coulomb charge is ______.
