Question

(d) Calculate the potential difference across the ends of a wire of resistance 2Ω when the current of 1.5 A passes through it​

Answer 1

Given:-

• Resistance ,R = 2 Ohm

• Current ,I = 1.5 A

To Find:-

• Potential Difference ,V

Solution:-

here we have to calculate the potential difference across the end of wire.

Using Ohm's Law

• V = IR

where,

V is the Potential Difference

I is the electric current

R is the Resistance

Substitute the value we get

→ V = 1.5 × 2

→ V = 3v

Therefore, the potential difference across the ends of the wire is 3 volts.

Additional Information !!

Potential Difference: The potential difference between two point in an electric circuit carrying some current as the work done to move a unit charge from one point to the other.

Potential difference = Work done /Charge.

• V = W/Q

here

V is the potential difference

W is the work done

Q is the charge

✧ SI unit of electric potential energy is volt (V).

✧ 1 volt : The potential difference between two points in a current carrying conductor when one joule of work is done to move a charge of one coulomb from one point to other.

1 Volt = 1Joule/1Coulomb

Answer 2

Answer:

Given :-

• Resistance of wire = 2 Ohm
• Current = 1.5 A

To Find :-

Potential difference

Solution :-

According to Ohm law,

V = IR

Here,

V = Potential difference

I = Current

R = Resistance

Putting values

V = 1.5 × 2

V = 3 Volt

Therefore, Potential difference is of 3 Volt.