Physics, 23.07.2019 01:00 cathyjuan

A9v battery is directly connected to each of 3 led bulbs. select the statement that accurately describes this circuit. a) a direct current is flowing through the bulbs using a series circuit so each bulb has the same current. b) a direct current is flowing through the bulbs using a parallel circuit so each bulb has the same voltage. c) an alternating current is flowing through the bulbs using a parallel circuit so each bulb has the same current. d) an alternating current is flowing through the bulbs using a series circuit so each bulb has the same voltage.

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First off, you can cross out alternating current because a 9V battery doesn't give out AC, it gives out solely DC. If the battery is connected to each battery individually, then they are in parallel. So, according to Kirchhoff's Voltage Law, in parallel, V total = V1 = V2= V3..
So I'd say B) !

Answer from: ashiteru123

The correct option is (B).

Explanation:

The voltage is same in the parallel combination of the circuit but the current is different in this case.

The current is same in the series combination of the circuit but the voltage is different.

In the given problem, a 9 V battery is directly connected to each of 3 LED bulbs. The voltage is same in three LED connected to the battery. Battery supplies DC voltage. The direct current is flowing in the given circuit as the battery is connected to the LED.

Therefore, a direct current is flowing through the bulbs using a parallel circuit so each bulb has the same voltage

Answer from: Quest

The answer is trial 3.

Answer from: Quest

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude $\delta h$ , so she gains some gravitational potential energy.

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