Electronics - Series Circuits - Discussion
Discussion Forum : Series Circuits - Filling the Blanks (Q.No. 8)
8.
In the given circuit, R2 equals _____.
100 k
200 k
300 k
More information is needed to find R2.
Discussion:
4 comments Page 1 of 1.
SAURABH K. CHHAYA said:
1 decade ago
Answer is D because in series circuit how can find out the resistance without current & voltages are available. Total voltage is given but in series circuit its not same.
Anusha said:
1 decade ago
Given voltage at R1 = 4.5v.
Voltage at R3 = i*R3 = (15*10^-6)*(100K) = 1.5v
Voltage at R2 = (9)-(4.5)-(1.5) = 3v.
R2 = v/i = 3/(15*10^-6) = 200K.
Voltage at R3 = i*R3 = (15*10^-6)*(100K) = 1.5v
Voltage at R2 = (9)-(4.5)-(1.5) = 3v.
R2 = v/i = 3/(15*10^-6) = 200K.
Dolly said:
8 years ago
I can't understand this question please explain it.
Dolly said:
8 years ago
Then how B is correct? Please explain it.
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