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3 years ago

What is direct current? In which direction does current go according to the electron flow convention?

Physics

1 answer:

KatRina [158]3 years ago

4 0

Answer:

Answer to the question is:

Explanation:

Direct Current:

It is that current where electrons circulate in the same amount and sense in time, that is, flowing in the same direction. Its polarity is invariable and causes a current of relatively constant amplitude to flow through a load. This type of current is known as direct current (DC), and is generated by a battery.

the current of electrons will leave the negative terminal of the battery, (because they repel each other and also repel free electrons in the copper conductor), and go to the positive terminal where there is a lack of electrons, passing through the circuit to which it is connected. In this way the electric current is produced.

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A particle of charge of +3.40 ✕ 10−6 C is 17.5 cm distant from a second particle of charge of −2.00 ✕ 10−6 C. Calculate the magn

Karolina [17]

Answer:

0.47 N

Explanation:

q1 = 3.4 x 10^-6 C

q2 = 2 x 10^-6 C

d = 17.5 cm = 0.175 m

The electrostatic force is given by

$F=\frac{Kq_{1}q_{2}}{d^{2}}$

$F=\frac{9\times10^{9}\times3.4\times 10^{-6}\times 2\times 10^{-6}}{0.175\times 0.175}$

F = 0.47 N

Thus, the force is 0.47 N.

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3 years ago

Power of an electric motor is 1 h.p. what does it mean ?

const2013 [10]

Answer: HP = Horse Power.

Explanation: it is the unit given to tell the motor's particular power and 1hp = 746 watts.

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3 years ago

Calculate the rate of energy transfer by a 5 ohms resistor when there is a current of 0.2 A in it.

vredina [299]

Answer: The rate of energy transfer by a 5 ohms resistor when there is a current of 0.2 A in it.= 1.25 watt.

Explanation:

The rate of energy transfer from one point to another is known as power.
Its SI. unit is <em>Watt.</em>

Formula to compute power:

Power = $I^2 R$ , I = cureent, R = resistance.

Given R = 5 ohm , Current = 0.5 A.

Then, power = $(0.5)^2\times 5=0.25\times5=1.25\ watt$

Hence, the rate of energy transfer by a 5 ohms resistor when there is a current of 0.2 A in it.= 1.25 watt.

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3 years ago

The blades of a metal cutter are shorter than the blades of paper cutter scissor. Give reason

Sladkaya [172]

Answer:

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3 years ago

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kodGreya [7K]

Answer:

jojo reference

Explanation:

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3 years ago