Question

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60 J of work is needed to move a charge of 5 C through a wire.

1. What potential difference will do this work?
2. What is the electric current if this charge moves through a wire over time of 1.25 seconds?
3. How long will it take to move 60 C of charge?
4. What is the resistance in the circuit?
5. If the resistance doubles, what will be the new electric current?

Answer 1

The potential difference,electric current ,resistance and new electric current will be 12 V,4 A,3 Ω,2 A.

What is resistance?

Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.

The energy in terms of the charge and potential difference is;

E= qV

60=5 C × V

V= 12 V

The electric current is found as;

$\rm I= \frac{q}{t} \\\\ I= \frac{5}{1.25}\\\\ I=4 \ A$

From the ohm's law;

V=IR

12=4 ×R

R=3Ω

If the voltage is constant and the resistance is doubled, then the new electric current is half of the previous condition;

$\rm I'=\frac{I}{2} \\\\ I'=\frac{4}{2} \\\\\ I'=2 \ A$

Hence, the potential difference,electric current ,resistance and new electric current will be 12 V,4 A,3 Ω,2 A.

To learn more about the resistance, refer to the link;

https://brainly.com/question/20708652

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