Question

some resistors each of 10ohm is connected in series and connected with a power supply of 220 volt and current in circuit is 0.2ampere . find the number of resistors......

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Answer 1

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Here u go.....

R(1) = 10 ohm

R(2)= 15 ohm

R(3) = 20 ohm

V(2) = 3v

I = V/R

=3/15 = 0.2A

Since current in series circuit across each resistor remains same,

I = 0.2

Now,

R(1) = 10ohm

I = 0.2 A

V = I R

= 0.2(10) = 2 v.

Hence, current across circuit is 0.2 A and potential drop across 10 ohm resistor is 2v

4.5

68 votes

THANKS 

127

Comments Report

HELLO THIS is your answer

Since resistors are connected in series effective resistance of the circuit= 10+15+20=45ohm

Now in series connection same current flows through each resistor

Therefore current in circuit => V=IR

3=I×15

I= 3/15= 0.2A

Now potential difference across 10ohm resistor=> V=IR = 0.2×10 = 2V

Hope it helps.......

4.6

13 votes

please mark me as brain list

Answer 2

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so I thought that I can use this I'd for taking points ☺