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SIZIF [17.4K]
3 years ago
8

Three basic electrical effects occur when an electric current flows in a conductor: A magnetic field is set up around the conduc

tor, heat is generated, and ? .
Physics
1 answer:
Alex787 [66]3 years ago
7 0

Answer:

A drop in voltage occurs  

Explanation:

When electric current flows through a conduct, there are three basic electrical effects that occur to the conductor;

1. A magnetic field is set up around the conductor,

      A magnetic field is formed around a conductor when current flows through it which makes it acts like a magnet. Application is used in electric bells.

2. Heat is generated, and

     The heating effect of current is due to the conversion of some of the electrical energy that passes through the conductor, into heat energy. Application of heat effect include electric iron, microwave oven, electric bulb, hair straightener etc.

                          H = I²Rt

3. A drop in voltage occurs  

      Voltage drop is as a result of current passing through the impedance  offers by the conductor or circuit elements. When current passes through a conductor, the resistance offers opposition to the flow of the electric current according to Ohm's law.

             

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Marrrta [24]

Answer:

EMF induced in the loop is 9.4 V

Explanation:

As we know that initial magnetic flux of the loop is given as

\phi_1 = B.A

\phi_1 = (0.60)(\pi (0.05)^2)

\phi_1 = 4.7 \times 10^{-3} Wb

As soon as the area of the loop becomes zero the final magnetic flux of the loop is ZERO

Now as per faraday's law of electromagnetic induction the EMF is induced due to rate of change in magnetic flux

so we will have

EMF = \frac{\Delta \phi}{\Delta t}

so we will have

EMF = \frac{4.7 \times 10^{-3} - 0}{0.50 \times 10^{-3}}

EMF = 9.4 V

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3 years ago
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Answer:

<h2>50 km/hr</h2>

Explanation:

The average speed of the car can be found by using the formula

s =  \frac{d}{t}  \\

d is the distance

t is the time taken

From the question we have

s =  \frac{300}{6}  = 50 \\

We have the final answer as

<h3>50 km/hr</h3>

Hope this helps you

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please show me the question paper .( Pic)

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