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EleoNora [17]
3 years ago
14

Describe the energy transfers of an electron around a circuit when the switch is closed

Physics
1 answer:
motikmotik3 years ago
6 0

Answer:

When a switch is closed, electrons move through a circuit from the negative side of a battery to the positive side

Explanation:

Note that current is marked to flow from positive to negative on circuit diagrams, but that's for historical reasons only. Benjamin Franklin did a fabulous job of understanding what was going on, but no one yet knew about protons & electrons, so he assumed current was flowing from positive to negative.

However, what really happens is electrons flow from negative (where they repel each other) to positive (where they are attracted).

As electrons flow through a circuit, they need 'something to do'. In many cases, that something is to light a bulb or heat an element, such as an element on a stove. So, the energy of an electron can be converted to heat or light.

I hope I'm understanding your question correctly

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A pendulum with a mass of 1 kg and a spring-oscillator with the same mass of 1 kg are both oscillating with a period of 0.5 seco
maria [59]

Answer:

Explanation:

Period of the pendulum will not change as the period is not a function of mass

T = 2π√(L/g)

Period of the spring oscillator will increase with larger mass because period is a function of mass.

T = 2π/ω = 2π/√(k/m) = 2π√(m/k)

7 0
3 years ago
How much electrical energy is used by a 400 W toaster that is operating for 5
Setler [38]

Answer:

The electrical energy consumed by a toaster is 0.033 Kwh.

Explanation:

The power utilized by the toaster is 400 W.

The toaster is operated for 5 Minutes.

We know that,

Substitute the values in the above formula to obtain electrical energy,

Electrical energy = 0.4 × 0.083

Electrical energy is 0.033 Kwh.

6 0
3 years ago
Read 2 more answers
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lana66690 [7]

Answer:

a = (v2 - v1) / t

From A to B    (8 - 4) m/s / 1 s = 4 m / s^2

From A to D    ( 7 - 4) m/s / 5 s = .6 m / s^2

Note these equations hold for "uniform" values

They say nothing about the acceleration at intermediate points - the equation just says that his average speed increased from 4 m/s to 7 m/s during a 5 sec period

6 0
3 years ago
How are electrical current measured
katrin2010 [14]

Answer:

ammeter

Explanation:

hope this helps

6 0
3 years ago
What is the emf of this cell under standard conditions? Express your answer using three significant figures.
madreJ [45]

Complete Question

A voltaic cell utilizes the following reaction and operates at 298 K:

3Ce4+(aq)+Cr(s)→3Ce3+(aq)+Cr3+(aq).

What is the emf of this cell under standard conditions? Express your answer using three significant figures.

Answer:

The value is E^o_{cell}  = 2.35 V

Explanation:

From the question we are told that

   The ionic equation is  

               3 Ce^{4 +}  _{(aq)}  +  Cr _{(s)}  \to  3 Ce^{3+} _{(aq)}  +  Cr^{3r}  _{(aq)}

Now under standard conditions the reduction  half reaction  is

      Ce^{4+}  + e \to Ce^{3+}  ; \ \ E^o_r  =  1.61 V

And the oxidation half reaction is

      Cr^{3+}  +  3e^{-}  \to  Cr ; \    \  \  E^o_o  =  - 0.74 V

The emf of this cell under standard conditions  is mathematically represented as

     E^o_{cell}  =  E^o _r -  E^o _o

substituting values

     E^o_{cell}  =  1.61  - (- 0.74)

    E^o_{cell}  = 2.35 V

     

3 0
3 years ago
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