The fourth band is a
Correct answer: D. Both (a) and (b)
- A. Gold band
- B. Silver band
- C. Brown band
- D. Both (a) and (b)
Explanation
The fourth band on a resistor represents the tolerance, which indicates the permissible deviation from the nominal resistance value. Typically, gold and silver bands are used to denote different tolerance levels. Gold represents a tighter tolerance (typically ±5%), while silver represents a looser tolerance (typically ±10%).
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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