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 
respectively, then
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 respectively, then
a)
b)
c)
d)
Bulbs will burn out due to the high voltage supply
Question ID - 150217 | SaraNextGen Top Answer
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 respectively, then
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 |
1 Answer
127 votes
Answer Key / Explanation : (a) -
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(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
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As
127 votes
Answer Link
127