A Variable Voltage in an Electrical Circuit Is Given By V

question 97

Multiple Choice

A variable voltage in an electrical circuit is given by $V = t ^ { 2 } - 9 t + 22$ , where t is in seconds. Find the values of t when the voltage V equals $4 \mathrm {~V}$ .

• A) \(t _ { 1 } = 2 , t _ { 2 } = 6 ,\)
• B) \(t _ { 1 } = 3 , \quad t _ { 2 } = 6 ,\)
• C) \(t _ { 1 } = 9 , t _ { 2 } = 16\)
• D) \(t _ { 1 } = 4 , t _ { 2 } = 8\)
• E) \(t _ { 1 } = 5 , t _ { 2 } = 9\)

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