Physics · DC Motors
When taking the brush voltage drop into account, which of the following represents the correct voltage equation for a DC motor?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1V = Eb + IaRa - brush drop
- 2Eb = V + IaRa - brush drop
- 3V - brush drop = Eb + IaRa✓
- 4brush drop = V + Eb + IaRa
Correct answer
V - brush drop = Eb + IaRa
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