Description
A 5Ω resistor and a 10Ω resistor are wired in series with an unknown resistor and a 6 V DC power source. A voltmeter measures the potential drop across the 5Ω resistor at 1.5V.
What is the voltage across each of the other resistors? Comparison to total voltage?
What is the resistance of the unknown resistor?
What is the equivalent resistance of the circuit?
What is the total current flowing through the circuit?
What is the current flowing through each resistor? Comparison to total current?
Explanation & Answer
SOLUTION:
R1= V1/I
I = V1/R1
= 1.5/5
I= 0.3A
This current will be equal for all resistors.
R2= V2/I
V2= IR2
= (0.3)(10)
= 3v
Vtotal= V1+ V2 + Vunknown
Vunknown = Vtotal – (V1+ V2)
Vunknown = 6 -3-0.3
Vunknown = 2.7v
Runknown=Vunknown/I
= 2.7/0.3
= 9 ohm
Rtotal= R1+R2+ Runknown
= 5+10+9
= 24 ohm
Review
Review
24/7 Homework Help
Stuck on a homework question? Our verified tutors can answer all questions, from basic math to advanced rocket science!
Similar Content
Related Tags
Sounds Like Titanic
by Jessica Chiccehito Hindman
Dr Jekyll And Mr Hyde
by Robert Louis Stevenson
No Exit
by Taylor Adams
Untamed
by Glennon Doyle
Orphan Train
by Christina Baker Kline
Fear - Trump in the White House
by Bob Woodward
12 Rules for Life
by Jordan Peterson
Cat on a Hot Tin Roof
by Tennessee Williams