All categories

3 years ago

Which way does electricity flow?

2 answers:

5 0

Answer: in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal.

Explanation:

Anna [14]3 years ago

5 0

Answer:

one direction: out of the positive terminal of a battery and back into the negative terminal.

Explanation:

Electrical engineers say that, in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal. Electronic technicians say that electricity flows the other direction: out of the negative terminal of a battery and back into the positive terminal.

You might be interested in

Convert 41.3 kilocalories into joules.

LiRa [457]

Explanation:

41.3 kilocalories = 172 799.2 joules

$hope \: it \: will \: help$

3 0

3 years ago

two objects were lifted by machine one object had a massive 2 kg it was lifted at a speed of 2 m/s the other had a massive 4 kg

rosijanka [135]

Kinetic energy =(1/2) (mass) (speed²)

First object: KE = (1/2) (2 kg) (2m/s)² = 4 joules during the lift.

Second object: KE = (1/2) (4kg) (3 m/s)² = 18 joules during the lift.

The second object has more kinetic energy while it's being lifted
than the first object has while it's being lifted. Once they reach their
final heights and stop, neither object has any kinetic energy.

8 0

4 years ago

Two lamps rated 60W; 240V and 100W, 240Vrespectively are connected in series to a 240V power source. Calculate;

nikdorinn [45]

Answer:

See the answers below.

Explanation:

The total power of the circuit is equal to the sum of the powers of each lamp.

$P=60+100\\P=160 [W]$

Now we have a voltage source equal to 240 [V], so by means of the following equation we can find the current circulating in the circuit.

$P=V*I$

where:

P = power [W]

V = voltage [V]

I = current [amp]

$I = P/V\\I=160/240\\I=0.67 [amp]$

So this is the answer for c) I = 0.67 [amp]

We know that the voltage of each lamp is 240 [V]. Therefore using ohm's law which is equal to the product of resistance by current we can find the voltage of each lamp.

$V=I*R$

where:

V = voltage [V]

I = current [amp]

R = resistance [ohms]

Therefore we replace this equation in the first to have the current as a function of the resistance and not the voltage.

$P=V*I\\and\\V = I*R\\P = (I*R)*I\\P=I^{2}*R$

$60 = (0.67)^{2}*R\\R_{60}=133.66[ohm] \\and\\100=(0.67)^{2} *R\\R_{100}=100/(0.66^{2} )\\R_{100}=225 [ohm]$

The effective resistance of a series circuit is equal to the sum of the resistors connected in series.

$R = 133.66 + 225\\R = 358.67 [ohms]$

7 0

3 years ago

If you hold a permanent magnet the wrong way in an extremely strong magnetic f eld, its magnetization will be permanently revers

Phoenix [80]

Answer: The domain that is aligned with the applied field will grow, while the domain that is oppositely aligned to the magnetic field will shrink, this is because permanent magnets produces their own magnetic field.

4 0

3 years ago

Electric devices use electric _____ to function

Rina8888 [55]

AC or DC

someone use active current or Direct current

6 0

3 years ago