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Question
A circular loop has a resistance of 60 Ω. Two points on the loop, one-quarter of the circumference apart are connected to a 24 V battery, having an internal resistance of 0.75 Ω. The current through the battery is ______.
Options
0.5 A
1 A
2 A
3 A
MCQ
Fill in the Blanks
Solution
A circular loop has a resistance of 60 Ω. Two points on the loop, one-quarter of the circumference apart are connected to a 24 V battery, having an internal resistance of 0.75 Ω. The current through the battery is 2 A.
Explanation:
Xp = 15 Ω || 45 Ω
= `(15 xx 45)/(15 + 45)`
= `45/4`
= 11.25 Ω
∴ I = `V/(X_p + r)`
= `24/(11.25 + 0.75)`
= 2 A
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