WAEC Physics 2017 Theory — Question 29
Question 29 of 33 from the West African Examinations Council (WAEC) Physics 2017 Theory paper, with the correct answer and a full explanation.
Advertisement
11(c) The battery of negligible internal resistance is connected to a set of resistors as illustrated in the circuit diagram above. Determine the equivalent resistance of the circuit
Model answer
Resolving R2 & R3 (both 2Ω, in parallel) makes their corresponding equivalent resistance be in series with R1 and R4: 1/R23=1/2+1/2=1 ∴ R23=1Ω. RT=R1+R4+R23=2+2+1=5Ω.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.