What type of circuits are shown in the...

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Question 1 of 205eccefa3bacbc34ba4d47f98

What type of circuits are shown in the illustration? See illustration EL-0024.

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5eccefa3bacbc34ba4d47f98

What type of circuits are shown in the illustration? See illustration EL-0024.

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🔍 Key Concepts

• Bridge circuit used to measure an unknown resistance using known standard resistors • Role of the galvanometer (G) in detecting when the bridge is balanced (no current through G) • Meaning of the labeled ratio arm R1/R2 and how it relates to comparing resistances

💭 Think About

• Look at how the unknown resistor R_X is connected with the standard resistor R_S and the ratio arm R1/R2—what classic measurement arrangement does this form? • When switch Sw 2 connects the galvanometer, under what condition will the current through G become zero, and what kind of circuit uses this "null" condition? • Which of the listed instruments is specifically designed around a four‑resistor bridge with an adjustable ratio arm to determine an unknown resistance?

✅ Before You Answer

• Confirm which choice is a device whose primary purpose is measuring resistance by balancing a bridge, not just high insulation resistance or magnetic fields • Check the diagram for four resistive arms forming a loop with a detector between two opposite junctions—match this to the correct instrument • Verify that the bottom photo shows a panel with multiple precision resistors/ratio knobs, consistent with a resistance bridge instrument

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Question 1 of 205eccefa3bacbc34ba4d47f98

What type of circuits are shown in the illustration? See illustration EL-0024.

Back

Question 1 of 20

5eccefa3bacbc34ba4d47f98

What type of circuits are shown in the illustration? See illustration EL-0024.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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