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3) Two cylindrical copper wires with a radius of 31 cm are connected to a battery...
Three identical resistors are connected to a lightbulb as shown in the figure. Assume the battery...
Three identical resistors are connected to a lightbulb as shown in the figure. Assume the battery and all wires are ideal. Initially the switch is closed and the bulb is on. What happens to the brightness of the bulb if the switch is opened? ーーー The bulb briefly gets dimmer but then returns to its initial brightness. The bulb gets brighter. The bulb's brightness is unchanged. The bulb gets dimmer. The bulb briefly gets brighter but then returns to its...
Two light bulbs are connected in parallel, and then connected to a battery, as shown in...
Two light bulbs are connected in parallel, and then connected to
a battery, as shown in Fig. 4.51(a). You observe that bulb 1 is
twice as bright as bulb 2. Assuming that the brightness of a bulb
is proportional to the power dissipated in the bulb’s resistor,
which bulb’s resistor is larger, and by what factor? The bulbs are
now connected in series ,as shown in Fig.4.51(b). Which bulb is
brighter, and by what factor? How bright is each bulb...
A 12-volt battery is connected to two light bulbs, as drawn in Figure 1. Light bulb...
A 12-volt battery is connected to two light bulbs, as drawn in
Figure 1. Light bulb 1 has resistance 3 ohms, while light bulb 2
has resistance 6 ohms. The battery has essentially no internal
resistance, and all the wires are essentially resistanceless,
too.
When a light bulb is unscrewed, no current flows through that
branch of the circuit. For instance, if light bulb 2 is unscrewed,
current flows only around the lower loop of the circuit, which
consists of...
A 24 V battery with an internal resistance r of 0.15 Ohm is connected across two...
A 24 V battery with an internal resistance r of 0.15 Ohm is connected across two wires as shown below. The first wire is made of copper, has a radius of 1.5 mm, and is 2000 m long. The second wire has the same radius and length as the copper wire but is made of aluminium. Both wires are wrapped around a cylindrical plastic core (like a solenoid). a. What is the equivalent resistance of the entire circuit? b. What...
Two resistors are connected in series with a battery whose EMF is 35 V as shown...
Two resistors are connected in series with a battery whose EMF is 35 V as shown in the figure below. The resistances of resistor 1 is R1=37 and of resistor 2 is R2 = 57 2. What is the value of the current flowing through the circuit? R1 E R2 In the figure below bulb B is brighter than bulb C which is brighter than bulb A. Rank the magnitudes of the potential differences (voltages) across the bulbs, largest first...
The picture shows a battery connected to two wires in parallel. Both wires are made of...
The picture shows a battery connected to two wires in parallel.
Both wires are made of the same material and are of the same
length, but the diameter of wire A is twice the diameter of wire
B.
True or False for the following:
1) The resistance of wire B is four times as large as the
resistance of wire A.
2) The power dissipated in wire A is 16 times the power
dissipated in wire B.
3) The voltage...
Two cylindrical resistors are made of copper (p=1.72x10^-8 ohm m). R1 has radius 2.00mm and length...
Two cylindrical resistors are made of copper (p=1.72x10^-8 ohm m). R1 has radius 2.00mm and length 1.00m. R2 has twice the radius of R1. (a) Resistance of R1? (b) length of R2 if it has the same resistance (c) find how much current flow if either resistor were connected to 15V battery. (d) what is the current density through each resistor? (e) what is the current out of the battery if the resistors are connected in series?
1. A battery is connected to a light bulb, lighting the bulb. Where in the circuit...
1. A battery is connected to a light bulb, lighting the bulb. Where in the circuit is the current the greatest? A) inside the battery B) it's the same at all these points C) inside the light bulb filament D) between the light bulb and the negative terminal of the battery E) between the positive terminal of the battery and the light bulb 2. The emf of a battery is: A) its internal resistance B) the voltage difference it provides...
Connect a battery to a solenoid A cylindrical solenoid 39 cm long with a radius of...
Connect a battery to a solenoid A cylindrical solenoid 39 cm long with a radius of 4 mm has 275 tightly-wound turns of wire uniformly distributed along its length (see the figure). Around the middle of the solenoid is a two-turn rectangular loop 3 cm by 2 cm made of resistive wire having a resistance of 185 ohms. One microsecond after connecting the loose wire to the battery to form a series circuit with the battery and a 20 A...
Question 26 of 31 > Attempt 1 Two steel wires are connected together, end to end,...
Question 26 of 31 > Attempt 1 Two steel wires are connected together, end to end, and attached to a wall. The two wires have the same length and elastic modulus, but the ratio of the radius of the first wire n to the radius of the second wire r is 9: 3. As the wires are initially the same length, the midpoint of the combination coincides with the connection point. An applied force then stretches the combination by 3.150...
Three identical resistors are connected to a lightbulb as shown in the figure. Assume the battery and all wires are ideal. Initially the switch is closed and the bulb is on. What happens to the brightness of the bulb if the switch is opened? ーーー The bulb briefly gets dimmer but then returns to its initial brightness. The bulb gets brighter. The bulb's brightness is unchanged. The bulb gets dimmer. The bulb briefly gets brighter but then returns to its...
Two light bulbs are connected in parallel, and then connected to
a battery, as shown in Fig. 4.51(a). You observe that bulb 1 is
twice as bright as bulb 2. Assuming that the brightness of a bulb
is proportional to the power dissipated in the bulb’s resistor,
which bulb’s resistor is larger, and by what factor? The bulbs are
now connected in series ,as shown in Fig.4.51(b). Which bulb is
brighter, and by what factor? How bright is each bulb...
A 12-volt battery is connected to two light bulbs, as drawn in
Figure 1. Light bulb 1 has resistance 3 ohms, while light bulb 2
has resistance 6 ohms. The battery has essentially no internal
resistance, and all the wires are essentially resistanceless,
too.
When a light bulb is unscrewed, no current flows through that
branch of the circuit. For instance, if light bulb 2 is unscrewed,
current flows only around the lower loop of the circuit, which
consists of...
A 24 V battery with an internal resistance r of 0.15 Ohm is connected across two wires as shown below. The first wire is made of copper, has a radius of 1.5 mm, and is 2000 m long. The second wire has the same radius and length as the copper wire but is made of aluminium. Both wires are wrapped around a cylindrical plastic core (like a solenoid). a. What is the equivalent resistance of the entire circuit? b. What...
Two resistors are connected in series with a battery whose EMF is 35 V as shown in the figure below. The resistances of resistor 1 is R1=37 and of resistor 2 is R2 = 57 2. What is the value of the current flowing through the circuit? R1 E R2 In the figure below bulb B is brighter than bulb C which is brighter than bulb A. Rank the magnitudes of the potential differences (voltages) across the bulbs, largest first...
The picture shows a battery connected to two wires in parallel.
Both wires are made of the same material and are of the same
length, but the diameter of wire A is twice the diameter of wire
B.
True or False for the following:
1) The resistance of wire B is four times as large as the
resistance of wire A.
2) The power dissipated in wire A is 16 times the power
dissipated in wire B.
3) The voltage...
Connect a battery to a solenoid A cylindrical solenoid 39 cm long with a radius of 4 mm has 275 tightly-wound turns of wire uniformly distributed along its length (see the figure). Around the middle of the solenoid is a two-turn rectangular loop 3 cm by 2 cm made of resistive wire having a resistance of 185 ohms. One microsecond after connecting the loose wire to the battery to form a series circuit with the battery and a 20 A...
Question 26 of 31 > Attempt 1 Two steel wires are connected together, end to end, and attached to a wall. The two wires have the same length and elastic modulus, but the ratio of the radius of the first wire n to the radius of the second wire r is 9: 3. As the wires are initially the same length, the midpoint of the combination coincides with the connection point. An applied force then stretches the combination by 3.150...
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