Which of the following statements best summarizes Ohm's Law? (a) In an electric circuit, the resistance equals the voltage divided by the current. (b) In an electric circuit, the current equals the voltage multiplied by the resistance. (c) In an electric circuit, the resistance is independent of voltage and current. (d) In an electric circuit, the voltage is twice the product of the current and resistance.
Ohm's law in formula: R = where R is the resistance, V is the voltage, and I is the current.
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The voltage, V, in volts, applied to an electric circuit can be modelled by the equation , where t is the time, in seconds. A component in the circuit can safely withstand a voltage of more than 120 V for 0.01 s or less. a) Determine the length of time that the voltage is greater than 120 V on each half-cycle. b) Is it safe to use this component in this circuit? Justify your answer.