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Mechanism of Formation of P-N Junction

The resistanc...

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The resistance of a metal is given by R=V/i is potential difference and i is the current. In acircuit, the potential difference across resistance is V= (8 \pm 0.5) volts and current in resistance i= (4+ 0.2) A percentage error?, . What is the value of resistance with percentage erro

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Q. The resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and voltage are each

3

% respectively, the maximum percentage error in measurement of resistance is:
(

R = \frac{V}{I}

Q. The values of current(I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are as given.

V(volts)	$0.5$	$1.0$	$1.5$	$2.0$	$2.5$	$3.0$	$4.0$	$5.0$
I(amperes)	$0.1$	$0.2$	$0.3$	$0.4$	$0.5$	$0.6$	$0.8$	$1.0$

Plot a graph between current(I) and potential difference (V) and determine the resistance (R) of the resistor.

Q. The values of current (I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are given below :

\begin{matrix} V (volts) & 0.5 & 1.0 & 1.5 & 2.0 & 2.5 & 3.0 & 4.0 & 5.0 I (amperes) & 0.1 & 0.2 & 0.3 & 0.4 & 0.5 & 0.6 & 0.8 & 1.0 \end{matrix}

Plot a graph between current (I) and potential difference (V) and determine the resistance (R) of the resistor.

I

through a rod of a certain metallic oxide is given by

I = 0.2 V^{5 / 2}

V

is the potential difference across it. The rod is connected in series with a resistance to a

6 V

battery of negligible internal resistance. What value should the series resistance have so that the power dissipated in the rod is twice that dissipated in the resistance?

I

through a rod of a certain metallic oxide is given by

I = 0.2 V^{5 / 2}

V

is the potential difference across it. The rod is connected in series with a resistance to a

6 V

battery of negligible internal resistance. What value (in ohms) should the series resistance have so that the current in the circuit is

0.44

? (round off the value to the nearest integer)

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