Question

3. (10 points) A battery with emf 20.0 V and internal resistance 1 ? is pictured in the thick-lined box in the circuit on the right. Point A is the positive terminal of the battery and point B is the negative terminal. The battery is connected to an external resistor and a switch as shown. The value of the external resistor is 14.0 ? a. What is the potential difference across the battery's terminals when the switch S is open, as shown? b. What is the potential difference across the battery's terminals when the switch S is closed? 4. (10 points total) R1 is 2.0 ohms, R2 is 4.0 ohms, R3 is 6.0 ohms, and R4 is 6.0 ohms. Find the equivalent resistance of the resistor network. Show all work.

          3. (10 points) A battery with emf 20.0 V and internal resistance 1 ? is pictured in the thick-lined box in the circuit on the right. Point A is the positive terminal of the battery and point B is the negative terminal. The battery is connected to an external resistor and a switch as shown. The value of the external resistor is 14.0 ?

a. What is the potential difference across the battery's terminals when the switch S is open, as shown?

b. What is the potential difference across the battery's terminals when the switch S is closed?

4. (10 points total)
R1 is 2.0 ohms, R2 is 4.0 ohms, R3 is 6.0 ohms, and R4 is 6.0 ohms.

Find the equivalent resistance of the resistor network. Show all work.

3. (10 points) A battery with emf 20.0 V and internal resistance 1 ? is pictured in the thick-lined box in the circuit on the right. Point A is the positive terminal of the battery and point B is the negative terminal. The battery is connected to an external resistor and a switch as shown. The value of the external resistor is 14.0 ?

a. What is the potential difference across the battery's terminals when the switch S is open, as shown?

b. What is the potential difference across the battery's terminals when the switch S is closed?

4. (10 points total)
R1 is 2.0 ohms, R2 is 4.0 ohms, R3 is 6.0 ohms, and R4 is 6.0 ohms.

Find the equivalent resistance of the resistor network. Show all work.

Added by Vicenta R.

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