Chapter 4: Q7E (page 1013)
A
Short Answer
(a) the toroidal solenoid has
(b) the current rate for potential difference to be
Chapter 4: Q7E (page 1013)
A
(a) the toroidal solenoid has
(b) the current rate for potential difference to be
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Get started for freeIn the circuit shown in Fig. E26.41, both capacitors are initially charged to 45.0 V. (a) How long after closing the switch S will the potential across each capacitor be reduced to 10.0 V, and (b) what will be the current at that time?
In the circuit, in Fig. E26.47 the capacitors are initially uncharged, the battery has no internal resistance, and the ammeter is idealized. Find the ammeter reading (a) just after the switch S is closed and (b) after S has been closed for a very long time.
Can potential difference between the terminals of a battery ever be opposite in direction to the emf? If it can, give an example. If it cannot, explain why not.
In the circuit of Fig. E25.30, the 5.0 โฆ resistor is removed and replaced by a resistor of unknown resistance R. When this is done, an ideal voltmeter connected across the points band creads 1.9 V. Find (a) the current in the circuit and (b) the resistance R. (c) Graph the potential rises and drops in this circuit (see Fig. 25.20).
A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80
min. Silver containsfree electrons per cubic meter. (a) What is the
current in the wire? (b) What is the magnitude of thedrift velocity of the
electrons in the wire?
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