Question

The electric current as a function of voltage of a wire is

presented by the graph. What is the power dissipated in the

resistor when the applied voltage 5v ?

​

Answer 1

Answer:

Problem 4 1(A) The electric current as a function of voltage of a wire is presented by the graph to the right. Use this graph for questions 8 and 9. 8. What is the resistance of the wire? A. 10 B.0.80 D. 0.40 E.0.20 C.1.60 9. The electric current as a function of voltage of a wire is presented by the graph. What is the power dissipated in the resistor when the applied voltage is 5 V? A. 5W B.10 w C.15 W D. 20 W E. 25 W V (V)

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Answer 2

⛄Rheostat is the instrument used to control the current in an electric circuit.

Rheostat is the instrument used to control the current in an electric circuit.It is an adjustable or variable resistor. It is used to control the electrical resistance of a circuit without interrupting the flow of current. Rheostat has 3 terminals and usually consist of a resistive wire wrapped to form a toroid coil with a wiper that slides along the surface of the coil. It is most often designed with a ceramic core. Rheostats are used in applications that require high voltage and current.

Rheostat is the instrument used to control the current in an electric circuit.It is an adjustable or variable resistor. It is used to control the electrical resistance of a circuit without interrupting the flow of current. Rheostat has 3 terminals and usually consist of a resistive wire wrapped to form a toroid coil with a wiper that slides along the surface of the coil. It is most often designed with a ceramic core. Rheostats are used in applications that require high voltage and current.The rheostat can adjust generator characteristics, dim lights, and start or control the speed of motors. Its resistance element can be a metal

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$</em></p><p><em>[tex]By power dissipated across a resistance</em></p><p><em>[tex]By power dissipated across a resistanceP=VI</em></p><p><em>[tex]By power dissipated across a resistanceP=VIor I=VP \\ </em></p><p><em>[tex]By power dissipated across a resistanceP=VIor I=VP \\ Loss in transmission  =I2r</em></p><p><em>[tex]By power dissipated across a resistanceP=VIor I=VP \\ Loss in transmission  =I2r=(VP)2r</em></p><p><em>[tex]By power dissipated across a resistanceP=VIor I=VP \\ Loss in transmission  =I2r=(VP)2r=V2P2⋅r  \\ </em></p><p><em>[tex]By power dissipated across a resistanceP=VIor I=VP \\ Loss in transmission  =I2r=(VP)2r=V2P2⋅r  \\ Thus loss in transmission ∝V21</em></p><p><em>[tex]By power dissipated across a resistanceP=VIor I=VP \\ Loss in transmission  =I2r=(VP)2r=V2P2⋅r  \\ Thus loss in transmission ∝V21So, loss in transmission is \\ inversely proportional to V2.$