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प्रश्न
Tick(✓) the correct choice in the following:
A three pin plug is connected to the lead for a 1 kW electric iron to be
used on a 250 V supply. Which of the following statements is not correct?
विकल्प
The fuse should be fitted in the I ive wire.
The live wire is coloured brown.
A 13 ampere fuse is the most suitable rating to use.
The yellow and green wire should be connected to the earth pin.
The blue wire should be connected to the neutral side of the mains.
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उत्तर
A 13 ampere fuse is the most suitable rating to use.
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
To increase the effective resistance in a circuit the resistors are connected in _____________.
Compare how an ammeter and a voltmeter are connected in a circuit.
(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:
(i) Total resistance.
(ii) Current shown by the ammeter A
A wire of length 5 m has a resistance of 2.0 Ω calculate:
(a) the resistance of wire of length 1 m
(b) the equivalent resistance if two such wires each of length 2 m are joined in parallel.
(c) the resistance of 1 m length of wire of same material but of half diameter.
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
Define the following:
Semiconductors
Find the effective resistance in the following circuit diagrams (Fig.):
A current of 0.3 A is flowing through a branch of 6 Ω resistors in a junction as shown in fig. . Calculate the
(a) P.d. across the junction XY,
(b) Current flowing through 9Ω and 24Ω
( c) P.d. across 24 Ω resistor, and
( d) e.m.f. of the cell.
A 3 pin mains plug is fitted to the lead for a 1 kW electric kettle to be used on a 250 V A.C. supply. Which of the following statements is NOT correct?
(a) A 13 A fuse is the most appropriate value to use.
(b) The brown wire should be connected to the live side of the mains.
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
