Lesson_3.4_Homework

Lesson_3.4_Homework - (c) Find the potential difference...

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Lesson 3.4 Homework: 1. Two resistors A and B are connected is series across a potential difference. A has twice the resistance of B. If the current in A is 2.0 A, what is the current in B? 2. When two identical resistors are connected in series across a battery, the power delivered by the battery is 20 W. If these resistors are connected in parallel across the same battery, what is the power delivered by the battery? 3. Two resistors connected in series have an equivalent resistance of 690 . When they are connected in parallel, their equivalent resistance is 150 . Find the resistance of each resistor. 4. 25.0 V 10.0 10.0 5.0 20.0 5.0 A B In the circuit shown above, (a) Find the potential difference between points A and B. (b) Find the current in the 20 resistor.
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Unformatted text preview: (c) Find the potential difference across the 20 resistor. 5. 6.0 2.0 4.0 V 4.0 V 2 1.0 8.0 V In the circuit shown above, find: (a) the current in each resistor (b) the power supplied by each battery (c) the power dissipated in each resistor. 6. A 6.0- F capacitor is charged to 100 V and is then connected across a 500 resistor. (a) What is the initial charge on the capacitor? (b) What is the initial current just after the capacitor is connected across the resistor? (c) What is the time constant of this circuit? (d) How much charge is on the capacitor after 6.0 ms? 7. A 0.12 F capacitor is given a charge Q o and is connected across a resistor. After 4.0 s, the charge on the capacitor is Q o /2. What is the resistance of the resistor?...
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Lesson_3.4_Homework - (c) Find the potential difference...

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