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A 72 Ω galvanometer is shunted by a resistance of 8 Ω. The percentage of the total current which passes through the galvanometer is

Asked in JEE Main 27th June 1st Shift 2022 · Conversion to ammeter and voltmeter

• (1) 0.1%
• (2) 10%
• (3) 25%
• (4) 0.25%

Step-by-step solution

Why the other options are wrong

• (1) Power-of-ten slip in the percentage.
• (3) Used S/G with wrong numbers or G/(G + S) wrongly.
• (4) Power-of-ten slip after using the wrong ratio.

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