Question

The potential difference across wire is 75V and its electric resistance is 30Ω. Find out the electric current through the wire.

Answer 1

ANSWER:-

given :-

v = 75V

R = 30Ω

find :-

I = ?

Concept :-

here apply Ohm's law, Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm's law is V = IR.

Calculation :-

=> V = IR

=> .°. I = V/R

=> 75 = I×30

=> I = 75/30

=> I = 2.5A.

therefore, the electric current through the wire is 2.5A.

Answer 2

Answer:

$\large{\underline{\boxed{\mathfrak\green{Electric \: current =2.5 \: A }}}}$

Question:-

The potential difference across wire is 75 V and its electric resistance is 30 ohm.Find out electric current through the wire.

Given:-

• Voltage(v) = 75V
• Resistance (R) = 30 ohm.

To find:-

• Electric Current = ?

Solution:-

Law used here:-

$\dag\: {\boxed{\rm{Ohm's \: law \longrightarrow I = \dfrac{V}{R} }}}$

$\frak{Here}\begin{cases}\sf{I \: denotes \: Current }\\\sf{V \: denotes \: voltage}\\\sf{R \: denotes \: resistance }\end{cases}$

$\scriptsize\: \: \: \: \dag\sf{Putting \: values :- }$

$\dashrightarrow\sf I = \dfrac{75}{30} \\\\\\\dashrightarrow\large{\underline{\boxed{\sf\blue{I = 2.5 \: A }}}}$

$\therefore{\underline{\sf\green{Electric\: current = 2.5 \: A }}}$

$\rule{100}{2}$

More informations:-

Ohm's law:-

• Ohm's law states states that current flowing between two points is proportional to its voltage.

$\therefore\sf{\: \: \: I \propto V }$

• It also states that current is inversely proportional to its resistance.

$\therefore\sf{\: \: \: \: I \propto \dfrac{1}{R} }$

• Formula mainly used according to Ohm's proposal is: Voltage = Current × Resistance.

$\therefore\sf{\: \: \: \: V = IR }$