Three electric bulbs with same voltage ratings of 110 volts but wattage ratings of 40, 60 and 100 watts respectively are connected in series across a 220 volt supply line. If their brightness are |
|
a) |
|
b) |
|
c) |
|
d) |
Bulbs will burn out due to the high voltage supply |
Three electric bulbs with same voltage ratings of 110 volts but wattage ratings of 40, 60 and 100 watts respectively are connected in series across a 220 volt supply line. If their brightness are |
|
a) |
|
b) |
|
c) |
|
d) |
Bulbs will burn out due to the high voltage supply |
(a) Resistance of a bulb For a given voltage Rate of heat produced, When the bulbs are connected in series, the current flowing through each bulb is same
|
Consider a rectangular slab of length |
|||
a) |
Becomes half of the initial value |
b) |
Becomes one-fourth of the initial value |
c) |
Becomes double the initial value |
d) |
Remains same |
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