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- A large capacitor of 1000 µF is charged by a steady current of 1 mA until it reaches a voltage of 100 V. At that voltage, the charging circuit is disconnected. a) Calculate how long the charging takes.3. Smartphone chargers are usually labeled with their current output in A (amps). Suppose your charger delivers a current of 1.1 A. If your phone's battery is completely drained, how long will it take to fully charge the battery using your charger?Charging time = _____ hours 4. Smartphones are advertised with a certain amount of "talk time", i.e., how long the phone's battery will last if you are making a call. If your phone is advertised with 24 hours of talk time, what is the average current coming from your phone's battery while making the call?Average current = _____ A 5. What is the average power output of your phone's battery while you're making a call?Average power = _____ Wthere's a 75-W lamp is connected to a 125 V battery. What is the current through the lamp? What is the resistance of the lamp?
- A wire carries a 4 A current. What is the current in a second wire that delivers twice as much charge in half the time?A current of 200mA flows through a 4kΩ resistor. What is the potential difference across the resistor?(I) What is the current in amperes if 1200 Na+ flowacross a cell membrane in 3.1µs The charge on thesodium is the same as on an electron, but positive.
- In the left figure, create two formulations/equations of the currents IT, I1, I2, & I3 using the conceptof KCL. On the other hand, create two formulations/equations of the given voltages using theconcept of KVL on the right figure.(Figure 1) is a current-versus-potential-difference graph for a cylinder. What is the cylinder's resistance?lightbulb has a resistance of 175 Ω when operating with a potential difference of 165 V across it. What is the current in the lightbulb (in mA)? mA (b) What If? What would be the current in the lightbulb (in mA) if it were used in Japan, where the potential difference across it would be 100 V? mA