5. In india electricity is supplied for domestic use at 220V. It is supplied at 110V in U.S.A. If the resistance of a 60 W bulb for use in india is R, then resistance of 60 W bulb for using U.S.A will be R. c) 4. R. d) a) R b) 2R
5. In india electricity is supplied for domestic use at 220V. It is supplied at 110V in U.S.A. If the resistance of a 60 W bulb for use in india is R, then resistance of 60 W bulb for using U.S.A will be R. c) 4. R. d) a) R b) 2R
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Transcribed Image Text:4.
Two bulbs of 500 W and 300 W are manufactured to operate on a 220V line. If their resistances are
R.
R, and R, respectively then the value of
is
R
3.
b)
25
c)
9.
9.
d)
25
a)
In india electricity is supplied for domestic use at 220 V. It is supplied at 110V in U.S.A. If the resistance
of a 60 W bulb for use in india is R, then resistance of 60 W bulb for using U.S.A will be
R.
c)
4.
R.
d)
a) R
b) 2R
6.
Anelectric bulb marked as 40 W and 220 V, is used in a circuit of supply voltage 100 V. Now its power
is
a) 8.264 W
b) 7.264 W
c) 5.264 W
d) 6.264 W
5/3
5.
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