The circuit is working, and all three bulbs are lit. If a switch at C is opened,
what will happen to the circuit?
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O A. All three bulbs will go out
O B. Bulb 3 will go out, but bulbs 1 and 2 will remain lit
O C. All three bulbs will stay lit.
O D Bulbs 2 and 3 will go out, but bulb 1 will remain lit
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True or false graphs must include scales that increase by the same amount

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.

What is the quantity which is measured by the area occupied below the velocity- time graph?