JAMB Physics 2014 Objective — Question 38
Question 38 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2014 Objective paper, with the correct answer and a full explanation.
Advertisement
A circuit has a resistance of 200Ω. The resistance of the circuit can be reduced to 120Ω when
- A. an 80Ω resistor is connected to it in series
- B. a 150Ω resistor is connected to it in parallel
- C. a 240Ω resistor is connected to it in series
- D. a 300Ω resistor is connected to it in parallelCorrect
Explanation
Per the source key, connecting a 300Ω resistor in parallel with the 200Ω resistor reduces the effective resistance to 120Ω (same computational principle as question 5 of the referenced 2016 paper).
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.