Ask a Question

Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can

0 votes
114 views
in Electricity by (98.9k points)
edited

Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?

1 Answer

0 votes
by (98.9k points)
selected by
 
Best answer

Resistance R1 of the bulb is given by the expression,
Supply voltage, V = 220 V
Maximum allowable current, I = 5 A
Rating of an electric bulb P=10watts
Because R=V2/P

 

Related questions

0 votes
1 answer 162 views
How many 176 Ω resistors (in parallel) are required to carry 5 A on a 220 V line?
asked Dec 14, 2021 in Electricity by Doubtly (98.9k points)

Doubtly is an online community for engineering students, offering:

  • Free viva questions PDFs
  • Previous year question papers (PYQs)
  • Academic doubt solutions
  • Expert-guided solutions

Get the pro version for free by logging in!

Most popular tags

jeemain geography-10th engineering physics semester 5 web computing

5.7k questions

5.1k answers

108 comments

561 users

Doubtly
...