MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Ohm's Law

How are the p...

Question

How are the potential difference (V), current (I) and resistance (R) related ?

Open in App

Solution

V = I $\times$ R

where,

V: Potential Difference (voltage)

I: Current

R: Resistance

Now, current is a property of the load (resistance). Hence, if the load increases, the current reduces, in order to maintain a constant voltage.

Suggest Corrections

thumbs-up

0

Similar questions

How are potential difference (V), current (I) and resistance (R) related?

Q. (a) What is the ratio of potential difference and current known as?
(b) The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below:

Potential differences, V (in volts)	:	2.5	5.0	10.0	15.0	20.0	25.0
Current, I (in amperes)	:	0.1	0.2	0.4	0.6	0.8	1.0

Plot a graph between V and I, and calculate the resistance of the resistor.
(c) Name the law which is illustrated by the above V−I graph.
(d) Write down the formula which states the relation between potential difference, current and resistance.
(e) The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?

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.

Q. The resistance of a metal is given by

R = V / I

V

is potential difference and

I

is the current. In a circuit, the potential difference across resistance is

V = (8 \pm 0.5) V

and current in resistance,

I = (4 \pm 0.2) ˚ A

. What is the value of resistance with its percentage error?

Q. The current flowing when a potential difference of

33 V

is applied across an appliance having a resistance of

110 Ω

I

. If the same current

(I)

is to flow through an appliance having a resistance of

500 Ω

, how much potential difference should be applied across it?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Intrinsic Property_Tackle

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard X Physics

Join BYJU'S Learning Program

CrossIcon