Questions from Modern Physics


Q: The 10.00-V battery in Fig. E26.

The 10.00-V battery in Fig. E26.28 is removed from the circuit and reinserted with the opposite polarity, so that its positive terminal is now next to point a. The rest of the circuit is as shown in t...

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Q: The 5.00-V battery in Fig. E26.

The 5.00-V battery in Fig. E26.28 is removed from the circuit and replaced by a 15.00-V battery, with its negative terminal next to point b. The rest of the circuit is as shown in the figure. Find F...

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Q: Three very long parallel wires each carry current I in the directions

Three very long parallel wires each carry current I in the directions shown in Fig. E28.28. If the separation between adjacent wires is d, calculate the magnitude and direction of the net magnetic for...

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Q: In the circuit shown in Fig. E26.31 the batteries

In the circuit shown in Fig. E26.31 the batteries have negligible internal resistance and the meters are both idealized. With the switch S open, the voltmeter reads 15.0 V. Fig. E26.31: (a). Find...

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Q: A battery with no internal resistance is connected across identical light bulbs

A battery with no internal resistance is connected across identical light bulbs as shown in Fig. Q26.7. When you close the switch S, will the brightness of bulbs B1 and B2 change? If so, how will it c...

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Q: In the circuit shown in Fig. E26.32 both batteries

In the circuit shown in Fig. E26.32 both batteries have insignificant internal resistance and the idealized ammeter reads 1.50 A in the direction shown. Find the emf

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Q: In the circuit shown in Fig. E26.33 all meters

In the circuit shown in Fig. E26.33 all meters are idealized and the batteries have no appreciable internal resistance. Fig. E26.33: (a). Find the reading of the voltmeter with the switch S open....

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Q: In the circuit shown in Fig. E26.34, the

In the circuit shown in Fig. E26.34, the 6.0-Ω resistor is consuming energy at a rate of 24 J/s when the current through it flows as shown. Fig. E26.34: (a). Find the current through t...

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Q: In the circuit shown in Fig. E26.23, ammeter

In the circuit shown in Fig. E26.23, ammeter A1 reads 10.0 A and the batteries have no appreciable internal resistance. Fig. E26.23: (a). What is the resistance of R? (b). Find the readings in the...

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Q: The batteries shown in the circuit in Fig. E26.24

The batteries shown in the circuit in Fig. E26.24 have negligibly small internal resistances. Find the current through Fig. E26.24: (a). the 30.0-Ω resistor; (b). the 20.0-Ω...

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