Question

how many electric bulbs to be used on a 220v electric supply line are rated low how many lamps can be connected in parallel with each other across the two wire of 220v line .if the maximum allowable current is 5a ​

Answer 1

Answer:

Secondary School Physics 18 points

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?

Ask for details Follow Report by Ahlaam 21.10.2017

Answers

parisinha1982p4no2o Ambitious

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

According to Ohm’s law,

V = I R

Let R is the total resistance of the circuit for x number of electric bulbs

R=V/I

=220/5=44 Ω

Resistance of each electric bulb, R1=4840Ω

∴ Number of electric bulbs connected in parallel are 110.