A complete series circuit consists of a 12.5Vbattery, a 4.68? resistor, and a sw

Question

A complete series circuit consists of a 12.5Vbattery, a 4.68? resistor, and a switch. The internal resistance of the battery is 0.310? .

Part A

What does an ideal voltmeter read when placed across the terminals of the battery? The switch is open.

Part B

What does an ideal voltmeter read when placed across the resistor? The switch is open.

Part C

What does an ideal voltmeter read when placed across the switch? The switch is open.

Part D

What does an ideal voltmeter read when placed across the terminals of the battery? The switch is closed.

Part E

What does an ideal voltmeter read when placed across the resistor? The switch is closed.

Part F

What does an ideal voltmeter read when placed across the switch? The switch is closed.

Explanation / Answer

Part A)

12.5 V

Part B)

0 V

Part C)

0 V

Part D)

Net resistance = 4.68 + .310 = 4.99 Ohms

V = IR

12.5 = I(4.99)

I = 2.505 Amps

E = V - Ir

E = 12.5 - 2.505(.31)

E = 11.7 V

Part E)

V = IR

V = (2.505)(4.68)

V = 11.7 V

Part F)

0 V

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