7. An electric heater is rated at 1000 W, a toaster is rated at 1500 W,...

7. An electric heater is rated at 1000 W, a toaster is rated at 1500 W, and an electric grill is rated at 2000 W. The three appliances are connected in parallel to a common 120 V circuit. (a) How much current does each appliance draw? (b) Is a 30 A circuit breaker sufficient in this situation?

8. (a) A 4 µF capacitor is connected to a 5 V battery.

(i) How much charge is stored on its plates when it is fully charged?

(ii) How much energy is stored by it when it is fully charged?

b) Three capacitors with capacitances, C1 = 1 F, C2 = 2 F, and C3 = 3 F, are connected to a 5-V source. What is the effective capacitance when the capacitors are connected in (i) series, (ii) parallel

Expert Solution

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genius_generous answered 2 years ago

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