A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation / = (0.880 A) sin [(264 rad/s)t]. (a) What is the frequency of the alternating current? (b) Determine the resistance of the bulb's filament. (c) What is the average power delivered to the light bulb? (a) Number i (b) Number i (c) Number i Units Units Units

A 215-KV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.10 x 10 resistance. (a) What is the resistance to ground of 50 of these insulators? (Assume the insulators are connected in parallel.) 2.267 Q (b) Calculate the power dissipated by 50 of them. X What is the voltage across the effective resistance? How can you find the power from the voltage and the resistance? W (c) What fraction of the power carried by the line is this? P x Protal What is the total power carried by the line?

Two resistors are connected in series in a circuit with a battery. The electromotive force (emf) of the battery is 3.0 volts. The resistances are 0.40 ohms and 1.85 ohms. (a) Determine the current I. Hint: The same current flows through both resistors. The voltage drop across the two resistors, i.e. IR₁ ✈ IR₂, is equal to the emf. (d) Determine the power in the first resistor. 1.78 W (e) Determine the power in the second resistor. 2.49 W

A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation / = (0.512 A) sin [(293 rad/s)t]. (a) What is the frequency of the alternating current? (b) Determine the resistance of the bulb's filament. (c) What is the average power delivered to the light bulb? (a) Number (b) Number (c) Number i Units Units Units ◄►

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You take a 6.34 V battery, a 226 kQ resistor, and an uncharged capacitor to put together a series circuit. You connect the battery and after 21.2 seconds the current in the circuit has fallen to 61% of its initial value. What is the value of the capacitor in microfarads (µF)? (Enter answer as an integer. Do not enter unit.) A Click Submit to complete this assessment. «< Question 2 of 2

A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation / = (0.653 A) sin [(262 rad/s)t]. (a) What is the frequency of the alternating current? (b) Determine the resistance of the bulb's filament. (c) What is the average power delivered to the light bulb? (a) Number (c) Number i - pul (b) Number i i Units Units Units