WAEC Physics 2024 Objective — Question 43
Question 43 of 50 from the West African Examinations Council (WAEC) Physics 2024 Objective paper, with the correct answer and a full explanation.
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43. A galvanometer of full-scale deflection 10 mA has a resistance of 5 Ohms. Calculate the shunt needed to convert it to measure a current of 2A.
- A. 0.050 Ohm
- B. 0.025 OhmCorrect
- C. 0.250 Ohm
- D. 0.500 Ohm
Explanation
Rshunt=IgRg/(I-Ig)=(0.01x5)/(2-0.01)=0.05/1.99=0.025 Ohm.
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