Which one of the following is correct for an open circuit?A. Vt = 0 ⃝ B. Vt < E ⃝C. Vt = E ⃝ D. Vt = E – Ir
Question
Which one of the following is correct for an open circuit?A. Vt = 0 ⃝ B. Vt < E ⃝C. Vt = E ⃝ D. Vt = E – Ir
Solution
The correct answer is C. Vt = E.
In an open circuit, the total voltage (Vt) is equal to the electromotive force (E). This is because in an open circuit, the current (I) is zero, so the voltage drop across the resistor (Ir) is also zero. Therefore, the total voltage is equal to the electromotive force.
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