12-volt battery is applied across 6-ohm resistance to have a steady flow of current. What must be the required potential difference across the same resistance to have a steady current of one ampere?
Correct answer: B. 6 V
- A. 12 V
- B. 6 V
- C. 1 V
- D. 3 V
Explanation
To determine the potential difference required across a 6-ohm resistance to achieve a steady current of one ampere, we can use Ohm's law, which states that the current flowing through a resistor is directly proportional to the applied voltage and inversely proportional to the resistance:Use formula V=IR, where I is 1 and R is 6.V = 1 x 6 = 6 V
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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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